1131100023021 has 48 divisors (see below), whose sum is σ = 1610382612096. Its totient is φ = 706024230912.

The previous prime is 1131100022989. The next prime is 1131100023023. The reversal of 1131100023021 is 1203200011311.

It is a happy number.

It is not a de Polignac number, because 1131100023021 - 2⁵ = 1131100022989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131100023023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43186696 + ... + 43212878.

It is an arithmetic number, because the mean of its divisors is an integer number (33549637752).

Almost surely, 2^{1131100023021} is an apocalyptic number.

It is an amenable number.

1131100023021 is a deficient number, since it is larger than the sum of its proper divisors (479282589075).

1131100023021 is a wasteful number, since it uses less digits than its factorization.

1131100023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26690 (or 26671 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1131100023021 its reverse (1203200011311), we get a palindrome (2334300034332).

The spelling of 1131100023021 in words is "one trillion, one hundred thirty-one billion, one hundred million, twenty-three thousand, twenty-one".