22432332421 has 2 divisors, whose sum is σ = 22432332422. Its totient is φ = 22432332420.

The previous prime is 22432332359. The next prime is 22432332457. The reversal of 22432332421 is 12423323422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18127660321 + 4304672100 = 134639^2 + 65610^2 .

It is a cyclic number.

It is not a de Polignac number, because 22432332421 - 2¹⁷ = 22432201349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22432332421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22432335421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11216166210 + 11216166211.

It is an arithmetic number, because the mean of its divisors is an integer number (11216166211).

Almost surely, 2^22432332421 is an apocalyptic number.

It is an amenable number.

22432332421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22432332421 is an equidigital number, since it uses as much as digits as its factorization.

22432332421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 28.

Adding to 22432332421 its reverse (12423323422), we get a palindrome (34855655843).

The spelling of 22432332421 in words is "twenty-two billion, four hundred thirty-two million, three hundred thirty-two thousand, four hundred twenty-one".