21992089210 has 32 divisors (see below), whose sum is σ = 48720938112. Its totient is φ = 6960133440.

The previous prime is 21992089183. The next prime is 21992089211. The reversal of 21992089210 is 1298029912.

It is a super-3 number, since 3×21992089210³ (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21992089211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12082656 + ... + 12084475.

It is an arithmetic number, because the mean of its divisors is an integer number (1522529316).

Almost surely, 2^21992089210 is an apocalyptic number.

21992089210 is an abundant number, since it is smaller than the sum of its proper divisors (26728848902).

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

21992089210 is a wasteful number, since it uses less digits than its factorization.

21992089210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24167158.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 21992089210 in words is "twenty-one billion, nine hundred ninety-two million, eighty-nine thousand, two hundred ten".