22312312421 has 4 divisors (see below), whose sum is σ = 25499785632. Its totient is φ = 19124839212.

The previous prime is 22312312417. The next prime is 22312312459. The reversal of 22312312421 is 12421321322.

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: 12421321322 = 2 ⋅6210660661.

It is a cyclic number.

It is not a de Polignac number, because 22312312421 - 2² = 22312312417 is a prime.

It is a super-3 number, since 3×22312312421³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22312312411) 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, 1593736595 + ... + 1593736608.

It is an arithmetic number, because the mean of its divisors is an integer number (6374946408).

Almost surely, 2^22312312421 is an apocalyptic number.

It is an amenable number.

22312312421 is a deficient number, since it is larger than the sum of its proper divisors (3187473211).

22312312421 is an equidigital number, since it uses as much as digits as its factorization.

22312312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187473210.

The product of its digits is 1152, while the sum is 23.

Adding to 22312312421 its reverse (12421321322), we get a palindrome (34733633743).

The spelling of 22312312421 in words is "twenty-two billion, three hundred twelve million, three hundred twelve thousand, four hundred twenty-one".