123012205113522 has 32 divisors (see below), whose sum is σ = 248566728816000. Its totient is φ = 40580368962048.

The previous prime is 123012205113521. The next prime is 123012205113527. The reversal of 123012205113522 is 225311502210321.

It is a super-3 number, since 3×123012205113522³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123012205113522.

It is not an unprimeable number, because it can be changed into a prime (123012205113521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21850104 + ... + 26897052.

It is an arithmetic number, because the mean of its divisors is an integer number (7767710275500).

Almost surely, 2^{123012205113522} is an apocalyptic number.

123012205113522 is an abundant number, since it is smaller than the sum of its proper divisors (125554523702478).

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

123012205113522 is a wasteful number, since it uses less digits than its factorization.

123012205113522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5088930.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 123012205113522 its reverse (225311502210321), we get a palindrome (348323707323843).

The spelling of 123012205113522 in words is "one hundred twenty-three trillion, twelve billion, two hundred five million, one hundred thirteen thousand, five hundred twenty-two".