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122012212020 = 22357925740973
BaseRepresentation
bin111000110100001111…
…1101001101100110100
3102122221020111120110120
41301220133221230310
53444340111241040
6132015053051540
711546401455516
oct1615037515464
9378836446416
10122012212020
1147821792866
121b791786bb0
13b67604907a
145c9669dbb6
15329197b7d0
hex1c687e9b34

122012212020 has 48 divisors (see below), whose sum is σ = 345958690560. Its totient is φ = 32124733056.

The previous prime is 122012212013. The next prime is 122012212123. The reversal of 122012212020 is 20212210221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12865747 + ... + 12875226.

It is an arithmetic number, because the mean of its divisors is an integer number (7207472720).

Almost surely, 2122012212020 is an apocalyptic number.

122012212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122012212020 is an abundant number, since it is smaller than the sum of its proper divisors (223946478540).

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

122012212020 is a wasteful number, since it uses less digits than its factorization.

122012212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25741064 (or 25741062 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122012212020 its reverse (20212210221), we get a palindrome (142224422241).

The spelling of 122012212020 in words is "one hundred twenty-two billion, twelve million, two hundred twelve thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 79 158 237 316 395 474 790 948 1185 1580 2370 4740 25740973 51481946 77222919 102963892 128704865 154445838 257409730 308891676 386114595 514819460 772229190 1544458380 2033536867 4067073734 6100610601 8134147468 10167684335 12201221202 20335368670 24402442404 30503053005 40670737340 61006106010 122012212020