22221110221023 has 96 divisors (see below), whose sum is σ = 37074478809600. Its totient is φ = 11776273496064.

The previous prime is 22221110220983. The next prime is 22221110221027. The reversal of 22221110221023 is 32012201112222.

It is not a de Polignac number, because 22221110221023 - 2¹³ = 22221110212831 is a prime.

It is a super-2 number, since 2×22221110221023² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221110221027) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13798983 + ... + 15324951.

It is an arithmetic number, because the mean of its divisors is an integer number (386192487600).

Almost surely, 2^{22221110221023} is an apocalyptic number.

22221110221023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22221110221023 is a deficient number, since it is larger than the sum of its proper divisors (14853368588577).

22221110221023 is a wasteful number, since it uses less digits than its factorization.

22221110221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526141 (or 1526134 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 22221110221023 its reverse (32012201112222), we get a palindrome (54233311333245).

The spelling of 22221110221023 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred ten million, two hundred twenty-one thousand, twenty-three".