11021240131 has 24 divisors (see below), whose sum is σ = 13013199504. Its totient is φ = 9251873280.

The previous prime is 11021240099. The next prime is 11021240141. The reversal of 11021240131 is 13104212011.

It is not a de Polignac number, because 11021240131 - 2⁵ = 11021240099 is a prime.

It is a super-2 number, since 2×11021240131² (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 (11021240141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135781 + ... + 201193.

It is an arithmetic number, because the mean of its divisors is an integer number (542216646).

Almost surely, 2^11021240131 is an apocalyptic number.

11021240131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11021240131 is a deficient number, since it is larger than the sum of its proper divisors (1991959373).

11021240131 is a wasteful number, since it uses less digits than its factorization.

11021240131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65511 (or 65494 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11021240131 its reverse (13104212011), we get a palindrome (24125452142).

It can be divided in two parts, 11021 and 240131, that added together give a palindrome (251152).

The spelling of 11021240131 in words is "eleven billion, twenty-one million, two hundred forty thousand, one hundred thirty-one".