11131213111 has 8 divisors (see below), whose sum is σ = 11344354560. Its totient is φ = 10918887672.

The previous prime is 11131213091. The next prime is 11131213211.

11131213111 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131213111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131213211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176425 + ... + 231058.

It is an arithmetic number, because the mean of its divisors is an integer number (1418044320).

Almost surely, 2^11131213111 is an apocalyptic number.

11131213111 is a deficient number, since it is larger than the sum of its proper divisors (213141449).

11131213111 is an equidigital number, since it uses as much as digits as its factorization.

11131213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408005.

The product of its digits is 18, while the sum is 16.

The spelling of 11131213111 in words is "eleven billion, one hundred thirty-one million, two hundred thirteen thousand, one hundred eleven".