22221421223 has 4 divisors (see below), whose sum is σ = 22344191688. Its totient is φ = 22098650760.

The previous prime is 22221421153. The next prime is 22221421231. The reversal of 22221421223 is 32212412222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22221421223 - 2¹⁴ = 22221404839 is a prime.

It is a super-2 number, since 2×22221421223² (a number of 21 digits) contains 22 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 (22221421423) 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, 61384961 + ... + 61385322.

It is an arithmetic number, because the mean of its divisors is an integer number (5586047922).

Almost surely, 2^22221421223 is an apocalyptic number.

22221421223 is a deficient number, since it is larger than the sum of its proper divisors (122770465).

22221421223 is a wasteful number, since it uses less digits than its factorization.

22221421223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122770464.

The product of its digits is 1536, while the sum is 23.

Adding to 22221421223 its reverse (32212412222), we get a palindrome (54433833445).

Subtracting 22221421223 from its reverse (32212412222), we obtain a palindrome (9990990999).

The spelling of 22221421223 in words is "twenty-two billion, two hundred twenty-one million, four hundred twenty-one thousand, two hundred twenty-three".