22250450251021 has 8 divisors (see below), whose sum is σ = 22671196066584. Its totient is φ = 21829738731840.

The previous prime is 22250450250991. The next prime is 22250450251033. The reversal of 22250450251021 is 12015205405222.

It can be written as a sum of positive squares in 4 ways, for example, as 1120339688521 + 21130110562500 = 1058461^2 + 4596750^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22250450251021 - 2¹⁵ = 22250450218253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22250450261021) 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 7 ways as a sum of consecutive naturals, for example, 7262410 + ... + 9861211.

It is an arithmetic number, because the mean of its divisors is an integer number (2833899508323).

Almost surely, 2^{22250450251021} is an apocalyptic number.

It is an amenable number.

22250450251021 is a deficient number, since it is larger than the sum of its proper divisors (420745815563).

22250450251021 is a wasteful number, since it uses less digits than its factorization.

22250450251021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17148191.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 22250450251021 its reverse (12015205405222), we get a palindrome (34265655656243).

The spelling of 22250450251021 in words is "twenty-two trillion, two hundred fifty billion, four hundred fifty million, two hundred fifty-one thousand, twenty-one".