121440406157412 has 48 divisors (see below), whose sum is σ = 283575100193280. Its totient is φ = 40449550124032.

The previous prime is 121440406157383. The next prime is 121440406157417. The reversal of 121440406157412 is 214751604044121.

It is not an unprimeable number, because it can be changed into a prime (121440406157417) 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, 122648014 + ... + 123634202.

It is an arithmetic number, because the mean of its divisors is an integer number (5907814587360).

Almost surely, 2^{121440406157412} is an apocalyptic number.

121440406157412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121440406157412 is an abundant number, since it is smaller than the sum of its proper divisors (162134694035868).

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

121440406157412 is a wasteful number, since it uses less digits than its factorization.

121440406157412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993940 (or 993938 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 121440406157412 in words is "one hundred twenty-one trillion, four hundred forty billion, four hundred six million, one hundred fifty-seven thousand, four hundred twelve".