121862693400 has 96 divisors (see below), whose sum is σ = 431742128640. Its totient is φ = 27854328960.

The previous prime is 121862693383. The next prime is 121862693423. The reversal of 121862693400 is 4396268121.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 14503264 + ... + 14511663.

It is an arithmetic number, because the mean of its divisors is an integer number (4497313840).

Almost surely, 2^121862693400 is an apocalyptic number.

121862693400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121862693400 is an abundant number, since it is smaller than the sum of its proper divisors (309879435240).

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

121862693400 is a wasteful number, since it uses less digits than its factorization.

121862693400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29014953 (or 29014944 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 121862693400 in words is "one hundred twenty-one billion, eight hundred sixty-two million, six hundred ninety-three thousand, four hundred".