22121011101253 has 2 divisors, whose sum is σ = 22121011101254. Its totient is φ = 22121011101252.

The previous prime is 22121011101209. The next prime is 22121011101347. The reversal of 22121011101253 is 35210111012122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21466153052964 + 654858048289 = 4633158^2 + 809233^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121011101253 - 2⁴¹ = 19921987845701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121011101053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060505550626 + 11060505550627.

It is an arithmetic number, because the mean of its divisors is an integer number (11060505550627).

Almost surely, 2^{22121011101253} is an apocalyptic number.

It is an amenable number.

22121011101253 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121011101253 is an equidigital number, since it uses as much as digits as its factorization.

22121011101253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 22121011101253 its reverse (35210111012122), we get a palindrome (57331122113375).

The spelling of 22121011101253 in words is "twenty-two trillion, one hundred twenty-one billion, eleven million, one hundred one thousand, two hundred fifty-three".