13011122131 has 4 divisors (see below), whose sum is σ = 14869853872. Its totient is φ = 11152390392.

The previous prime is 13011122101. The next prime is 13011122141. The reversal of 13011122131 is 13122111031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13122111031 = 181 ⋅72497851.

It is a cyclic number.

It is not a de Polignac number, because 13011122131 - 2²¹ = 13009024979 is a prime.

It is a super-2 number, since 2×13011122131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13011122101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929365860 + ... + 929365873.

It is an arithmetic number, because the mean of its divisors is an integer number (3717463468).

Almost surely, 2^13011122131 is an apocalyptic number.

13011122131 is a deficient number, since it is larger than the sum of its proper divisors (1858731741).

13011122131 is an equidigital number, since it uses as much as digits as its factorization.

13011122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858731740.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13011122131 its reverse (13122111031), we get a palindrome (26133233162).

The spelling of 13011122131 in words is "thirteen billion, eleven million, one hundred twenty-two thousand, one hundred thirty-one".