22532055421 has 2 divisors, whose sum is σ = 22532055422. Its totient is φ = 22532055420.

The previous prime is 22532055397. The next prime is 22532055437. The reversal of 22532055421 is 12455023522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21583723396 + 948332025 = 146914^2 + 30795^2 .

It is a cyclic number.

It is not a de Polignac number, because 22532055421 - 2¹³ = 22532047229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22532055451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11266027710 + 11266027711.

It is an arithmetic number, because the mean of its divisors is an integer number (11266027711).

Almost surely, 2^22532055421 is an apocalyptic number.

It is an amenable number.

22532055421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22532055421 is an equidigital number, since it uses as much as digits as its factorization.

22532055421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 22532055421 its reverse (12455023522), we get a palindrome (34987078943).

The spelling of 22532055421 in words is "twenty-two billion, five hundred thirty-two million, fifty-five thousand, four hundred twenty-one".