121512112260 has 96 divisors (see below), whose sum is σ = 424187753472. Its totient is φ = 25249269120.

The previous prime is 121512112247. The next prime is 121512112303. The reversal of 121512112260 is 62211215121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121512112260.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13146042 + ... + 13155281.

It is an arithmetic number, because the mean of its divisors is an integer number (4418622432).

Almost surely, 2^121512112260 is an apocalyptic number.

121512112260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121512112260 is an abundant number, since it is smaller than the sum of its proper divisors (302675641212).

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

121512112260 is a wasteful number, since it uses less digits than its factorization.

121512112260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26301353 (or 26301351 counting only the distinct ones).

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

Adding to 121512112260 its reverse (62211215121), we get a palindrome (183723327381).

The spelling of 121512112260 in words is "one hundred twenty-one billion, five hundred twelve million, one hundred twelve thousand, two hundred sixty".