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122204030020 = 22529209209189
BaseRepresentation
bin111000111001111101…
…1011000010001000100
3102200102121102221021221
41301303323120101010
54000233212430040
6132050104250124
711554221054622
oct1616373302104
9380377387257
10122204030020
114790aa97536
121b825a70944
13b6a69ca147
145cb3d52512
1532a371b74a
hex1c73ed8444

122204030020 has 24 divisors (see below), whose sum is σ = 256638475800. Its totient is φ = 48879704832.

The previous prime is 122204029999. The next prime is 122204030023. The reversal of 122204030020 is 20030402221.

It can be written as a sum of positive squares in 4 ways, for example, as 1076364864 + 121127665156 = 32808^2 + 348034^2 .

It is a super-2 number, since 2×1222040300202 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122204029976 and 122204030003.

It is not an unprimeable number, because it can be changed into a prime (122204030023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479586 + ... + 688774.

It is an arithmetic number, because the mean of its divisors is an integer number (10693269825).

Almost surely, 2122204030020 is an apocalyptic number.

122204030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122204030020 is an abundant number, since it is smaller than the sum of its proper divisors (134434445780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122204030020 is a wasteful number, since it uses less digits than its factorization.

122204030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238407 (or 238405 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 122204030020 its reverse (20030402221), we get a palindrome (142234432241).

The spelling of 122204030020 in words is "one hundred twenty-two billion, two hundred four million, thirty thousand, twenty".

Divisors: 1 2 4 5 10 20 29209 58418 116836 146045 209189 292090 418378 584180 836756 1045945 2091890 4183780 6110201501 12220403002 24440806004 30551007505 61102015010 122204030020