121924702990 has 8 divisors (see below), whose sum is σ = 219464465400. Its totient is φ = 48769881192.

The previous prime is 121924702973. The next prime is 121924702993. The reversal of 121924702990 is 99207429121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121924702990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121924702993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6096235140 + ... + 6096235159.

It is an arithmetic number, because the mean of its divisors is an integer number (27433058175).

Almost surely, 2^121924702990 is an apocalyptic number.

121924702990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121924702990 is a deficient number, since it is larger than the sum of its proper divisors (97539762410).

121924702990 is a wasteful number, since it uses less digits than its factorization.

121924702990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12192470306.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 121924702990 in words is "one hundred twenty-one billion, nine hundred twenty-four million, seven hundred two thousand, nine hundred ninety".