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111122020 = 22516693329
BaseRepresentation
bin1101001111110…
…01011001100100
321202002120202101
412213321121210
5211421401040
615005421444
72516343622
oct647713144
9252076671
10111122020
11577a8689
123126a884
131a038c99
1410a88512
159b5009a
hex69f9664

111122020 has 24 divisors (see below), whose sum is σ = 233566200. Its totient is φ = 44408832.

The previous prime is 111122003. The next prime is 111122041. The reversal of 111122020 is 20221111.

It can be written as a sum of positive squares in 4 ways, for example, as 8667136 + 102454884 = 2944^2 + 10122^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111121988 and 111122006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31716 + ... + 35044.

It is an arithmetic number, because the mean of its divisors is an integer number (9731925).

Almost surely, 2111122020 is an apocalyptic number.

111122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122020 is an abundant number, since it is smaller than the sum of its proper divisors (122444180).

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

111122020 is a wasteful number, since it uses less digits than its factorization.

111122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007 (or 5005 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 111122020 is about 10541.4429752288. The cubic root of 111122020 is about 480.7655895946.

Adding to 111122020 its reverse (20221111), we get a palindrome (131343131).

Subtracting from 111122020 its reverse (20221111), we obtain a palindrome (90900909).

The spelling of 111122020 in words is "one hundred eleven million, one hundred twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 1669 3329 3338 6658 6676 8345 13316 16645 16690 33290 33380 66580 5556101 11112202 22224404 27780505 55561010 111122020