11131142223121 has 4 divisors (see below), whose sum is σ = 11131792309872. Its totient is φ = 11130492136372.

The previous prime is 11131142223107. The next prime is 11131142223241. The reversal of 11131142223121 is 12132224113111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11131142223121 - 2²¹ = 11131140125969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131142223521) 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 3 ways as a sum of consecutive naturals, for example, 325017691 + ... + 325051936.

It is an arithmetic number, because the mean of its divisors is an integer number (2782948077468).

Almost surely, 2^{11131142223121} is an apocalyptic number.

It is an amenable number.

11131142223121 is a deficient number, since it is larger than the sum of its proper divisors (650086751).

11131142223121 is an equidigital number, since it uses as much as digits as its factorization.

11131142223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650086750.

The product of its digits is 576, while the sum is 25.

Adding to 11131142223121 its reverse (12132224113111), we get a palindrome (23263366336232).

The spelling of 11131142223121 in words is "eleven trillion, one hundred thirty-one billion, one hundred forty-two million, two hundred twenty-three thousand, one hundred twenty-one".