19922398220 has 12 divisors (see below), whose sum is σ = 41837036304. Its totient is φ = 7968959280.

The previous prime is 19922398213. The next prime is 19922398351. The reversal of 19922398220 is 2289322991.

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 3 ways as a sum of consecutive naturals, for example, 498059936 + ... + 498059975.

It is an arithmetic number, because the mean of its divisors is an integer number (3486419692).

Almost surely, 2^19922398220 is an apocalyptic number.

19922398220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19922398220 is an abundant number, since it is smaller than the sum of its proper divisors (21914638084).

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

19922398220 is a wasteful number, since it uses less digits than its factorization.

19922398220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996119920 (or 996119918 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 19922398220 in words is "nineteen billion, nine hundred twenty-two million, three hundred ninety-eight thousand, two hundred twenty".