1131213300021 has 48 divisors (see below), whose sum is σ = 1962471798144. Its totient is φ = 614310625152.

The previous prime is 1131213299989. The next prime is 1131213300031. The reversal of 1131213300021 is 1200033121311.

1131213300021 is a `hidden beast` number, since 1 + 1 + 312 + 1 + 330 + 0 + 0 + 21 = 666.

It is not a de Polignac number, because 1131213300021 - 2⁵ = 1131213299989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131213299967 and 1131213300003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131213300031) 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, 5542686 + ... + 5743151.

It is an arithmetic number, because the mean of its divisors is an integer number (40884829128).

Almost surely, 2^{1131213300021} is an apocalyptic number.

It is an amenable number.

1131213300021 is a deficient number, since it is larger than the sum of its proper divisors (831258498123).

1131213300021 is a wasteful number, since it uses less digits than its factorization.

1131213300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11285930 (or 11285927 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1131213300021 its reverse (1200033121311), we get a palindrome (2331246421332).

The spelling of 1131213300021 in words is "one trillion, one hundred thirty-one billion, two hundred thirteen million, three hundred thousand, twenty-one".