22540421401 has 2 divisors, whose sum is σ = 22540421402. Its totient is φ = 22540421400.

The previous prime is 22540421359. The next prime is 22540421437. The reversal of 22540421401 is 10412404522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20996010000 + 1544411401 = 144900^2 + 39299^2 .

It is a cyclic number.

It is not a de Polignac number, because 22540421401 - 2⁷ = 22540421273 is a prime.

It is not a weakly prime, because it can be changed into another prime (22540427401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11270210700 + 11270210701.

It is an arithmetic number, because the mean of its divisors is an integer number (11270210701).

Almost surely, 2^22540421401 is an apocalyptic number.

It is an amenable number.

22540421401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22540421401 is an equidigital number, since it uses as much as digits as its factorization.

22540421401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 22540421401 its reverse (10412404522), we get a palindrome (32952825923).

The spelling of 22540421401 in words is "twenty-two billion, five hundred forty million, four hundred twenty-one thousand, four hundred one".