22252021021045 has 4 divisors (see below), whose sum is σ = 26702425225260. Its totient is φ = 17801616816832.

The previous prime is 22252021020961. The next prime is 22252021021121. The reversal of 22252021021045 is 54012012025222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14809551429124 + 7442469591921 = 3848318^2 + 2728089^2 .

It is a cyclic number.

It is not a de Polignac number, because 22252021021045 - 2¹³ = 22252021012853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225202102100 + ... + 2225202102109.

It is an arithmetic number, because the mean of its divisors is an integer number (6675606306315).

Almost surely, 2^{22252021021045} is an apocalyptic number.

It is an amenable number.

22252021021045 is a deficient number, since it is larger than the sum of its proper divisors (4450404204215).

22252021021045 is an equidigital number, since it uses as much as digits as its factorization.

22252021021045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450404204214.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 22252021021045 its reverse (54012012025222), we get a palindrome (76264033046267).

The spelling of 22252021021045 in words is "twenty-two trillion, two hundred fifty-two billion, twenty-one million, twenty-one thousand, forty-five".