20992090220 has 48 divisors (see below), whose sum is σ = 45631252800. Its totient is φ = 8102357760.

The previous prime is 20992090129. The next prime is 20992090237. The reversal of 20992090220 is 2209029902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027505 + ... + 1047735.

It is an arithmetic number, because the mean of its divisors is an integer number (950651100).

Almost surely, 2^20992090220 is an apocalyptic number.

20992090220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20992090220 is an abundant number, since it is smaller than the sum of its proper divisors (24639162580).

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

20992090220 is a wasteful number, since it uses less digits than its factorization.

20992090220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22058 (or 22056 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 20992090220 in words is "twenty billion, nine hundred ninety-two million, ninety thousand, two hundred twenty".