1131313011021 has 24 divisors (see below), whose sum is σ = 1651314666144. Its totient is φ = 746281317600.

The previous prime is 1131313011013. The next prime is 1131313011061. The reversal of 1131313011021 is 1201103131311.

It is not a de Polignac number, because 1131313011021 - 2³ = 1131313011013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131313010985 and 1131313011003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131313011061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1096470 + ... + 1861416.

It is an arithmetic number, because the mean of its divisors is an integer number (68804777756).

Almost surely, 2^{1131313011021} is an apocalyptic number.

It is an amenable number.

1131313011021 is a deficient number, since it is larger than the sum of its proper divisors (520001655123).

1131313011021 is a wasteful number, since it uses less digits than its factorization.

1131313011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766681 (or 766678 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1131313011021 its reverse (1201103131311), we get a palindrome (2332416142332).

The spelling of 1131313011021 in words is "one trillion, one hundred thirty-one billion, three hundred thirteen million, eleven thousand, twenty-one".