1131321012201 has 12 divisors (see below), whose sum is σ = 1678296036612. Its totient is φ = 733829845536.

The previous prime is 1131321012187. The next prime is 1131321012209. The reversal of 1131321012201 is 1022101231311.

1131321012201 is a `hidden beast` number, since 1 + 131 + 321 + 0 + 12 + 201 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 772641000000 + 358680012201 = 879000^2 + 598899^2 .

It is not a de Polignac number, because 1131321012201 - 2¹⁸ = 1131320750057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131321012209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1698679866 + ... + 1698680531.

It is an arithmetic number, because the mean of its divisors is an integer number (139858003051).

Almost surely, 2^{1131321012201} is an apocalyptic number.

It is an amenable number.

1131321012201 is a deficient number, since it is larger than the sum of its proper divisors (546975024411).

1131321012201 is a wasteful number, since it uses less digits than its factorization.

1131321012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397360440 (or 3397360437 counting only the distinct ones).

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

Adding to 1131321012201 its reverse (1022101231311), we get a palindrome (2153422243512).

The spelling of 1131321012201 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-one million, twelve thousand, two hundred one".