1131022232121 has 4 divisors (see below), whose sum is σ = 1508029642832. Its totient is φ = 754014821412.

The previous prime is 1131022232099. The next prime is 1131022232159. The reversal of 1131022232121 is 1212322201311.

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 not a de Polignac number, because 1131022232121 - 2⁶ = 1131022232057 is a prime.

It is a super-2 number, since 2×1131022232121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131022232321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188503705351 + ... + 188503705356.

It is an arithmetic number, because the mean of its divisors is an integer number (377007410708).

Almost surely, 2^{1131022232121} is an apocalyptic number.

It is an amenable number.

1131022232121 is a deficient number, since it is larger than the sum of its proper divisors (377007410711).

1131022232121 is an equidigital number, since it uses as much as digits as its factorization.

1131022232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377007410710.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1131022232121 its reverse (1212322201311), we get a palindrome (2343344433432).

The spelling of 1131022232121 in words is "one trillion, one hundred thirty-one billion, twenty-two million, two hundred thirty-two thousand, one hundred twenty-one".