22310211221 has 4 divisors (see below), whose sum is σ = 22314012000. Its totient is φ = 22306410444.

The previous prime is 22310211211. The next prime is 22310211311. The reversal of 22310211221 is 12211201322.

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 a de Polignac number, because none of the positive numbers 2^k-22310211221 is a prime.

It is a super-3 number, since 3×22310211221³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22310211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22310211211) 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, 1891571 + ... + 1903328.

It is an arithmetic number, because the mean of its divisors is an integer number (5578503000).

Almost surely, 2^22310211221 is an apocalyptic number.

It is an amenable number.

22310211221 is a deficient number, since it is larger than the sum of its proper divisors (3800779).

22310211221 is an equidigital number, since it uses as much as digits as its factorization.

22310211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800778.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22310211221 its reverse (12211201322), we get a palindrome (34521412543).

The spelling of 22310211221 in words is "twenty-two billion, three hundred ten million, two hundred eleven thousand, two hundred twenty-one".