11020102131 has 4 divisors (see below), whose sum is σ = 14693469512. Its totient is φ = 7346734752.

The previous prime is 11020102129. The next prime is 11020102157. The reversal of 11020102131 is 13120102011.

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

It is not a de Polignac number, because 11020102131 - 2¹ = 11020102129 is a prime.

It is a super-2 number, since 2×11020102131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11020102031) 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, 1836683686 + ... + 1836683691.

It is an arithmetic number, because the mean of its divisors is an integer number (3673367378).

Almost surely, 2^11020102131 is an apocalyptic number.

11020102131 is a deficient number, since it is larger than the sum of its proper divisors (3673367381).

11020102131 is an equidigital number, since it uses as much as digits as its factorization.

11020102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673367380.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 11020102131 its reverse (13120102011), we get a palindrome (24140204142).

The spelling of 11020102131 in words is "eleven billion, twenty million, one hundred two thousand, one hundred thirty-one".