2101331020 has 48 divisors (see below), whose sum is σ = 4506969600. Its totient is φ = 822718400.

The previous prime is 2101331017. The next prime is 2101331069. The reversal of 2101331020 is 201331012.

It is a super-2 number, since 2×2101331020² = 8831184111228480800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278295 + ... + 285745.

It is an arithmetic number, because the mean of its divisors is an integer number (93895200).

Almost surely, 2^2101331020 is an apocalyptic number.

2101331020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101331020 is an abundant number, since it is smaller than the sum of its proper divisors (2405638580).

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

2101331020 is a wasteful number, since it uses less digits than its factorization.

2101331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7758 (or 7756 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2101331020 is about 45840.2772679224. The cubic root of 2101331020 is about 1280.8496596696.

Adding to 2101331020 its reverse (201331012), we get a palindrome (2302662032).

The spelling of 2101331020 in words is "two billion, one hundred one million, three hundred thirty-one thousand, twenty".