21120092 has 12 divisors (see below), whose sum is σ = 42240240. Its totient is φ = 9051456.

The previous prime is 21120089. The next prime is 21120109. The reversal of 21120092 is 29002112.

21120092 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21120092.

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, 377117 + ... + 377172.

It is an arithmetic number, because the mean of its divisors is an integer number (3520020).

Almost surely, 2^21120092 is an apocalyptic number.

It is an amenable number.

21120092 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21120092 is a wasteful number, since it uses less digits than its factorization.

21120092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754300 (or 754298 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 21120092 is about 4595.6601266847. The cubic root of 21120092 is about 276.4173305628.

The spelling of 21120092 in words is "twenty-one million, one hundred twenty thousand, ninety-two".