11131123211999 has 32 divisors (see below), whose sum is σ = 13510132070400. Its totient is φ = 8952712054272.

The previous prime is 11131123211993. The next prime is 11131123212019. The reversal of 11131123211999 is 99911232113111.

It is not a de Polignac number, because 11131123211999 - 2²⁸ = 11130854776543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131123211993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378041972 + ... + 378071414.

It is an arithmetic number, because the mean of its divisors is an integer number (422191627200).

Almost surely, 2^{11131123211999} is an apocalyptic number.

11131123211999 is a deficient number, since it is larger than the sum of its proper divisors (2379008858401).

11131123211999 is a wasteful number, since it uses less digits than its factorization.

11131123211999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38919.

The product of its digits is 26244, while the sum is 44.

The spelling of 11131123211999 in words is "eleven trillion, one hundred thirty-one billion, one hundred twenty-three million, two hundred eleven thousand, nine hundred ninety-nine".