121354075780 has 48 divisors (see below), whose sum is σ = 306578724480. Its totient is φ = 39417262848.

The previous prime is 121354075763. The next prime is 121354075783. The reversal of 121354075780 is 87570453121.

It is not an unprimeable number, because it can be changed into a prime (121354075783) 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, 22808257 + ... + 22813576.

It is an arithmetic number, because the mean of its divisors is an integer number (6387056760).

Almost surely, 2^121354075780 is an apocalyptic number.

121354075780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121354075780 is an abundant number, since it is smaller than the sum of its proper divisors (185224648700).

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

121354075780 is a wasteful number, since it uses less digits than its factorization.

121354075780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45621868 (or 45621866 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 121354075780 in words is "one hundred twenty-one billion, three hundred fifty-four million, seventy-five thousand, seven hundred eighty".