121210392 has 16 divisors (see below), whose sum is σ = 303026040. Its totient is φ = 40403456.

The previous prime is 121210379. The next prime is 121210399. The reversal of 121210392 is 293012121.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210399) 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, 2525193 + ... + 2525240.

Almost surely, 2^121210392 is an apocalyptic number.

121210392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121210392 is an abundant number, since it is smaller than the sum of its proper divisors (181815648).

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

121210392 is a wasteful number, since it uses less digits than its factorization.

121210392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050442 (or 5050438 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 121210392 is about 11009.5591192382. The cubic root of 121210392 is about 494.8952497457.

The spelling of 121210392 in words is "one hundred twenty-one million, two hundred ten thousand, three hundred ninety-two".