13031121032011 has 16 divisors (see below), whose sum is σ = 14109811914240. Its totient is φ = 11996591058720.

The previous prime is 13031121031993. The next prime is 13031121032051. The reversal of 13031121032011 is 11023012113031.

It is a cyclic number.

It is not a de Polignac number, because 13031121032011 - 2²³ = 13031112643403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13031121032011.

It is not an unprimeable number, because it can be changed into a prime (13031121032051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67635235 + ... + 67827628.

It is an arithmetic number, because the mean of its divisors is an integer number (881863244640).

Almost surely, 2^{13031121032011} is an apocalyptic number.

13031121032011 is a deficient number, since it is larger than the sum of its proper divisors (1078690882229).

13031121032011 is a wasteful number, since it uses less digits than its factorization.

13031121032011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135463026.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 13031121032011 its reverse (11023012113031), we get a palindrome (24054133145042).

The spelling of 13031121032011 in words is "thirteen trillion, thirty-one billion, one hundred twenty-one million, thirty-two thousand, eleven".