2102220131 has 4 divisors (see below), whose sum is σ = 2293331064. Its totient is φ = 1911109200.

The previous prime is 2102220061. The next prime is 2102220149. The reversal of 2102220131 is 1310222012.

It is a happy number.

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

It is not a de Polignac number, because 2102220131 - 2¹⁸ = 2101957987 is a prime.

It is a super-2 number, since 2×2102220131² = 8838658958363314322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102220151) 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, 95555450 + ... + 95555471.

It is an arithmetic number, because the mean of its divisors is an integer number (573332766).

Almost surely, 2^2102220131 is an apocalyptic number.

2102220131 is a deficient number, since it is larger than the sum of its proper divisors (191110933).

2102220131 is a wasteful number, since it uses less digits than its factorization.

2102220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191110932.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2102220131 is about 45849.9741657506. The cubic root of 2102220131 is about 1281.0302843832.

Adding to 2102220131 its reverse (1310222012), we get a palindrome (3412442143).

The spelling of 2102220131 in words is "two billion, one hundred two million, two hundred twenty thousand, one hundred thirty-one".