20021333120 has 32 divisors (see below), whose sum is σ = 47863501020. Its totient is φ = 8008532992.

The previous prime is 20021333119. The next prime is 20021333131. The reversal of 20021333120 is 2133312002.

It can be written as a sum of positive squares in 2 ways, for example, as 18712051264 + 1309281856 = 136792^2 + 36184^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 15641027 + ... + 15642306.

Almost surely, 2^20021333120 is an apocalyptic number.

20021333120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021333120 is an abundant number, since it is smaller than the sum of its proper divisors (27842167900).

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

20021333120 is an equidigital number, since it uses as much as digits as its factorization.

20021333120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31283352 (or 31283340 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20021333120 its reverse (2133312002), we get a palindrome (22154645122).

The spelling of 20021333120 in words is "twenty billion, twenty-one million, three hundred thirty-three thousand, one hundred twenty".