11213231111121 has 32 divisors (see below), whose sum is σ = 16675225878528. Its totient is φ = 6658510178880.

The previous prime is 11213231111107. The next prime is 11213231111141. The reversal of 11213231111121 is 12111113231211.

It is not a de Polignac number, because 11213231111121 - 2⁷ = 11213231110993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11213231111141) 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, 42950281 + ... + 43210566.

It is an arithmetic number, because the mean of its divisors is an integer number (521100808704).

Almost surely, 2^{11213231111121} is an apocalyptic number.

It is an amenable number.

11213231111121 is a deficient number, since it is larger than the sum of its proper divisors (5461994767407).

11213231111121 is a wasteful number, since it uses less digits than its factorization.

11213231111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86160981.

The product of its digits is 72, while the sum is 21.

Adding to 11213231111121 its reverse (12111113231211), we get a palindrome (23324344342332).

The spelling of 11213231111121 in words is "eleven trillion, two hundred thirteen billion, two hundred thirty-one million, one hundred eleven thousand, one hundred twenty-one".