22310400421 has 2 divisors, whose sum is σ = 22310400422. Its totient is φ = 22310400420.

The previous prime is 22310400397. The next prime is 22310400433. The reversal of 22310400421 is 12400401322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14373372321 + 7937028100 = 119889^2 + 89090^2 .

It is a cyclic number.

It is not a de Polignac number, because 22310400421 - 2⁷ = 22310400293 is a prime.

It is a super-3 number, since 3×22310400421³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22310490421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11155200210 + 11155200211.

It is an arithmetic number, because the mean of its divisors is an integer number (11155200211).

Almost surely, 2^22310400421 is an apocalyptic number.

It is an amenable number.

22310400421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22310400421 is an equidigital number, since it uses as much as digits as its factorization.

22310400421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22310400421 its reverse (12400401322), we get a palindrome (34710801743).

Subtracting from 22310400421 its reverse (12400401322), we obtain a palindrome (9909999099).

The spelling of 22310400421 in words is "twenty-two billion, three hundred ten million, four hundred thousand, four hundred twenty-one".