22121127260377 has 2 divisors, whose sum is σ = 22121127260378. Its totient is φ = 22121127260376.

The previous prime is 22121127260359. The next prime is 22121127260383. The reversal of 22121127260377 is 77306272112122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19077117765696 + 3044009494681 = 4367736^2 + 1744709^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121127260377 - 2⁷ = 22121127260249 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121127260347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060563630188 + 11060563630189.

It is an arithmetic number, because the mean of its divisors is an integer number (11060563630189).

Almost surely, 2^{22121127260377} is an apocalyptic number.

It is an amenable number.

22121127260377 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121127260377 is an equidigital number, since it uses as much as digits as its factorization.

22121127260377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 43.

Adding to 22121127260377 its reverse (77306272112122), we get a palindrome (99427399372499).

The spelling of 22121127260377 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty-seven million, two hundred sixty thousand, three hundred seventy-seven".