20021000313033 has 24 divisors (see below), whose sum is σ = 29252072327400. Its totient is φ = 13193791801344.

The previous prime is 20021000313023. The next prime is 20021000313043. The reversal of 20021000313033 is 33031300012002.

It is an interprime number because it is at equal distance from previous prime (20021000313023) and next prime (20021000313043).

It can be written as a sum of positive squares in 4 ways, for example, as 170740851264 + 19850259461769 = 413208^2 + 4455363^2 .

It is not a de Polignac number, because 20021000313033 - 2¹⁶ = 20021000247497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20021000312997 and 20021000313015.

It is not an unprimeable number, because it can be changed into a prime (20021000313023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419148 + ... + 6341741.

It is an arithmetic number, because the mean of its divisors is an integer number (1218836346975).

Almost surely, 2^{20021000313033} is an apocalyptic number.

It is an amenable number.

20021000313033 is a deficient number, since it is larger than the sum of its proper divisors (9231072014367).

20021000313033 is a wasteful number, since it uses less digits than its factorization.

20021000313033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6764681 (or 6764678 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20021000313033 its reverse (33031300012002), we get a palindrome (53052300325035).

The spelling of 20021000313033 in words is "twenty trillion, twenty-one billion, three hundred thirteen thousand, thirty-three".