20033311020 has 96 divisors (see below), whose sum is σ = 60656698368. Its totient is φ = 4920978432.

The previous prime is 20033311013. The next prime is 20033311021. The reversal of 20033311020 is 2011333002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20033311021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161002 + ... + 256881.

It is an arithmetic number, because the mean of its divisors is an integer number (631840608).

Almost surely, 2^20033311020 is an apocalyptic number.

20033311020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20033311020 is an abundant number, since it is smaller than the sum of its proper divisors (40623387348).

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

20033311020 is a wasteful number, since it uses less digits than its factorization.

20033311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417959 (or 417957 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20033311020 its reverse (2011333002), we get a palindrome (22044644022).

The spelling of 20033311020 in words is "twenty billion, thirty-three million, three hundred eleven thousand, twenty".