2101202131 has 4 divisors (see below), whose sum is σ = 2401373872. Its totient is φ = 1801030392.

The previous prime is 2101202111. The next prime is 2101202137. The reversal of 2101202131 is 1312021012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2101202131 - 2¹⁵ = 2101169363 is a prime.

It is a super-2 number, since 2×2101202131² = 8830100790637882322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101202137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150085860 + ... + 150085873.

It is an arithmetic number, because the mean of its divisors is an integer number (600343468).

Almost surely, 2^2101202131 is an apocalyptic number.

2101202131 is a deficient number, since it is larger than the sum of its proper divisors (300171741).

2101202131 is an equidigital number, since it uses as much as digits as its factorization.

2101202131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300171740.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2101202131 is about 45838.8713975377. The cubic root of 2101202131 is about 1280.8234713782.

Adding to 2101202131 its reverse (1312021012), we get a palindrome (3413223143).

The spelling of 2101202131 in words is "two billion, one hundred one million, two hundred two thousand, one hundred thirty-one".