121890982 has 8 divisors (see below), whose sum is σ = 187088616. Its totient is φ = 59528112.

The previous prime is 121890971. The next prime is 121891009. The reversal of 121890982 is 289098121.

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

It is a super-2 number, since 2×121890982² = 29714822985848648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708583 + ... + 708754.

It is an arithmetic number, because the mean of its divisors is an integer number (23386077).

Almost surely, 2^121890982 is an apocalyptic number.

121890982 is a deficient number, since it is larger than the sum of its proper divisors (65197634).

121890982 is a wasteful number, since it uses less digits than its factorization.

121890982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417382.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 121890982 is about 11040.4249012436. The cubic root of 121890982 is about 495.8197917792.

The spelling of 121890982 in words is "one hundred twenty-one million, eight hundred ninety thousand, nine hundred eighty-two".