22345051221 has 6 divisors (see below), whose sum is σ = 32276185110. Its totient is φ = 14896700808.

The previous prime is 22345051207. The next prime is 22345051249. The reversal of 22345051221 is 12215054322.

22345051221 is a `hidden beast` number, since 2 + 2 + 34 + 505 + 122 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13222700100 + 9122351121 = 114990^2 + 95511^2 .

It is not a de Polignac number, because 22345051221 - 2⁹ = 22345050709 is a prime.

It is a super-2 number, since 2×22345051221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22345053221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1241391726 + ... + 1241391743.

It is an arithmetic number, because the mean of its divisors is an integer number (5379364185).

Almost surely, 2^22345051221 is an apocalyptic number.

It is an amenable number.

22345051221 is a deficient number, since it is larger than the sum of its proper divisors (9931133889).

22345051221 is a wasteful number, since it uses less digits than its factorization.

22345051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482783475 (or 2482783472 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 22345051221 in words is "twenty-two billion, three hundred forty-five million, fifty-one thousand, two hundred twenty-one".