22254436021 has 16 divisors (see below), whose sum is σ = 22616782848. Its totient is φ = 21895614000.

The previous prime is 22254436013. The next prime is 22254436091. The reversal of 22254436021 is 12063445222.

It is a cyclic number.

It is not a de Polignac number, because 22254436021 - 2³ = 22254436013 is a prime.

It is a super-2 number, since 2×22254436021² (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 (22254436091) 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 15 ways as a sum of consecutive naturals, for example, 16279080 + ... + 16280446.

It is an arithmetic number, because the mean of its divisors is an integer number (1413548928).

Almost surely, 2^22254436021 is an apocalyptic number.

It is an amenable number.

22254436021 is a deficient number, since it is larger than the sum of its proper divisors (362346827).

22254436021 is a wasteful number, since it uses less digits than its factorization.

22254436021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 22254436021 in words is "twenty-two billion, two hundred fifty-four million, four hundred thirty-six thousand, twenty-one".