22353554021 has 2 divisors, whose sum is σ = 22353554022. Its totient is φ = 22353554020.

The previous prime is 22353554011. The next prime is 22353554057. The reversal of 22353554021 is 12045535322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16696257796 + 5657296225 = 129214^2 + 75215^2 .

It is a cyclic number.

It is not a de Polignac number, because 22353554021 - 2¹⁴ = 22353537637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22353554011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11176777010 + 11176777011.

It is an arithmetic number, because the mean of its divisors is an integer number (11176777011).

Almost surely, 2^22353554021 is an apocalyptic number.

It is an amenable number.

22353554021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22353554021 is an equidigital number, since it uses as much as digits as its factorization.

22353554021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 22353554021 in words is "twenty-two billion, three hundred fifty-three million, five hundred fifty-four thousand, twenty-one".