1131202021311 has 24 divisors (see below), whose sum is σ = 1713824209344. Its totient is φ = 718140893760.

The previous prime is 1131202021277. The next prime is 1131202021333.

1131202021311 is a `hidden beast` number, since 1 + 1 + 312 + 0 + 20 + 21 + 311 = 666.

1131202021311 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1131202021311 - 2⁶ = 1131202021247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131202021351) 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, 36122680 + ... + 36153981.

It is an arithmetic number, because the mean of its divisors is an integer number (71409342056).

Almost surely, 2^{1131202021311} is an apocalyptic number.

1131202021311 is a deficient number, since it is larger than the sum of its proper divisors (582622188033).

1131202021311 is a wasteful number, since it uses less digits than its factorization.

1131202021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72276751 (or 72276748 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 1131202021311 in words is "one trillion, one hundred thirty-one billion, two hundred two million, twenty-one thousand, three hundred eleven".