121313252526 has 32 divisors (see below), whose sum is σ = 256944102048. Its totient is φ = 38052326400.

The previous prime is 121313252503. The next prime is 121313252527. The reversal of 121313252526 is 625252313121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121313252527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490626 + ... + 695226.

It is an arithmetic number, because the mean of its divisors is an integer number (8029503189).

Almost surely, 2^121313252526 is an apocalyptic number.

121313252526 is an abundant number, since it is smaller than the sum of its proper divisors (135630849522).

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

121313252526 is a wasteful number, since it uses less digits than its factorization.

121313252526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210436.

The product of its digits is 21600, while the sum is 33.

Adding to 121313252526 its reverse (625252313121), we get a palindrome (746565565647).

The spelling of 121313252526 in words is "one hundred twenty-one billion, three hundred thirteen million, two hundred fifty-two thousand, five hundred twenty-six".