22121110421413 has 2 divisors, whose sum is σ = 22121110421414. Its totient is φ = 22121110421412.

The previous prime is 22121110421387. The next prime is 22121110421453. The reversal of 22121110421413 is 31412401112122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21985239300964 + 135871120449 = 4688842^2 + 368607^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121110421413 - 2²⁵ = 22121076866981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121110421453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060555210706 + 11060555210707.

It is an arithmetic number, because the mean of its divisors is an integer number (11060555210707).

Almost surely, 2^{22121110421413} is an apocalyptic number.

It is an amenable number.

22121110421413 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121110421413 is an equidigital number, since it uses as much as digits as its factorization.

22121110421413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 22121110421413 its reverse (31412401112122), we get a palindrome (53533511533535).

The spelling of 22121110421413 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred ten million, four hundred twenty-one thousand, four hundred thirteen".