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122012210122 = 21117359319489
BaseRepresentation
bin111000110100001111…
…1101001001111001010
3102122221020111110212021
41301220133221033022
53444340111210442
6132015053035054
711546401450135
oct1615037511712
9378836443767
10122012210122
11478217913a0
121b791785a8a
13b67604824a
145c9669d21c
15329197ae67
hex1c687e93ca

122012210122 has 16 divisors (see below), whose sum is σ = 199668470400. Its totient is φ = 55456727040.

The previous prime is 122012210113. The next prime is 122012210129. The reversal of 122012210122 is 221012210221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122012210096 and 122012210105.

It is not an unprimeable number, because it can be changed into a prime (122012210129) 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, 222154 + ... + 541642.

It is an arithmetic number, because the mean of its divisors is an integer number (12479279400).

Almost surely, 2122012210122 is an apocalyptic number.

122012210122 is a deficient number, since it is larger than the sum of its proper divisors (77656260278).

122012210122 is a wasteful number, since it uses less digits than its factorization.

122012210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336861.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122012210122 its reverse (221012210221), we get a palindrome (343024420343).

Subtracting 122012210122 from its reverse (221012210221), we obtain a palindrome (99000000099).

The spelling of 122012210122 in words is "one hundred twenty-two billion, twelve million, two hundred ten thousand, one hundred twenty-two".

Divisors: 1 2 11 22 17359 34718 190949 319489 381898 638978 3514379 7028758 5546009551 11092019102 61006105061 122012210122