121111413504 has 36 divisors (see below), whose sum is σ = 322332982776. Its totient is φ = 40370470912.

The previous prime is 121111413503. The next prime is 121111413529. The reversal of 121111413504 is 405314111121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (121111413503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78847809 + ... + 78849344.

It is an arithmetic number, because the mean of its divisors is an integer number (8953693966).

Almost surely, 2^121111413504 is an apocalyptic number.

It is an amenable number.

121111413504 is an abundant number, since it is smaller than the sum of its proper divisors (201221569272).

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

121111413504 is an equidigital number, since it uses as much as digits as its factorization.

121111413504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157697172 (or 157697158 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 121111413504 its reverse (405314111121), we get a palindrome (526425524625).

The spelling of 121111413504 in words is "one hundred twenty-one billion, one hundred eleven million, four hundred thirteen thousand, five hundred four".