22312231121 has 4 divisors (see below), whose sum is σ = 23031980544. Its totient is φ = 21592481700.

The previous prime is 22312231103. The next prime is 22312231147. The reversal of 22312231121 is 12113221322.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12113221322 = 2 ⋅6056610661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22312231121 is a prime.

It is a super-3 number, since 3×22312231121³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22312231093 and 22312231102.

It is not an unprimeable number, because it can be changed into a prime (22312231321) 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, 359874665 + ... + 359874726.

It is an arithmetic number, because the mean of its divisors is an integer number (5757995136).

Almost surely, 2^22312231121 is an apocalyptic number.

It is an amenable number.

22312231121 is a deficient number, since it is larger than the sum of its proper divisors (719749423).

22312231121 is an equidigital number, since it uses as much as digits as its factorization.

22312231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719749422.

The product of its digits is 288, while the sum is 20.

Adding to 22312231121 its reverse (12113221322), we get a palindrome (34425452443).

The spelling of 22312231121 in words is "twenty-two billion, three hundred twelve million, two hundred thirty-one thousand, one hundred twenty-one".