121407075260 has 24 divisors (see below), whose sum is σ = 258447393456. Its totient is φ = 47897585280.

The previous prime is 121407075239. The next prime is 121407075263. The reversal of 121407075260 is 62570704121.

It is a self number, because there is not a number n which added to its sum of digits gives 121407075260.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121407075263) 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, 41576306 + ... + 41579225.

It is an arithmetic number, because the mean of its divisors is an integer number (10768641394).

Almost surely, 2^121407075260 is an apocalyptic number.

121407075260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121407075260 is an abundant number, since it is smaller than the sum of its proper divisors (137040318196).

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

121407075260 is a wasteful number, since it uses less digits than its factorization.

121407075260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83155613 (or 83155611 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 121407075260 its reverse (62570704121), we get a palindrome (183977779381).

The spelling of 121407075260 in words is "one hundred twenty-one billion, four hundred seven million, seventy-five thousand, two hundred sixty".