22311021223 has 4 divisors (see below), whose sum is σ = 23281065648. Its totient is φ = 21340976800.

The previous prime is 22311021217. The next prime is 22311021259. The reversal of 22311021223 is 32212011322.

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 22311021223 - 2²⁹ = 21774150311 is a prime.

It is a super-3 number, since 3×22311021223³ (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 22311021223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22311027223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485022178 + ... + 485022223.

It is an arithmetic number, because the mean of its divisors is an integer number (5820266412).

Almost surely, 2^22311021223 is an apocalyptic number.

22311021223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22311021223 is a deficient number, since it is larger than the sum of its proper divisors (970044425).

22311021223 is an equidigital number, since it uses as much as digits as its factorization.

22311021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970044424.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22311021223 its reverse (32212011322), we get a palindrome (54523032545).

Subtracting 22311021223 from its reverse (32212011322), we obtain a palindrome (9900990099).

The spelling of 22311021223 in words is "twenty-two billion, three hundred eleven million, twenty-one thousand, two hundred twenty-three".