121136215113126 has 48 divisors (see below), whose sum is σ = 263606138516448. Its totient is φ = 40202832998400.

The previous prime is 121136215113119. The next prime is 121136215113149. The reversal of 121136215113126 is 621311512631121.

121136215113126 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 3 + 621 + 5 + 1 + 1 + 3 + 1 + 26 = 666.

It is a super-2 number, since 2×121136215113126² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3788911 + ... + 16019621.

It is an arithmetic number, because the mean of its divisors is an integer number (5491794552426).

Almost surely, 2^{121136215113126} is an apocalyptic number.

121136215113126 is an abundant number, since it is smaller than the sum of its proper divisors (142469923403322).

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

121136215113126 is a wasteful number, since it uses less digits than its factorization.

121136215113126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12233117 (or 12233114 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

Adding to 121136215113126 its reverse (621311512631121), we get a palindrome (742447727744247).

The spelling of 121136215113126 in words is "one hundred twenty-one trillion, one hundred thirty-six billion, two hundred fifteen million, one hundred thirteen thousand, one hundred twenty-six".