22016445525121 has 2 divisors, whose sum is σ = 22016445525122. Its totient is φ = 22016445525120.

The previous prime is 22016445525119. The next prime is 22016445525127. The reversal of 22016445525121 is 12152554461022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21581933844496 + 434511680625 = 4645636^2 + 659175^2 .

It is a cyclic number.

It is not a de Polignac number, because 22016445525121 - 2¹ = 22016445525119 is a prime.

Together with 22016445525119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22016445525127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11008222762560 + 11008222762561.

It is an arithmetic number, because the mean of its divisors is an integer number (11008222762561).

Almost surely, 2^{22016445525121} is an apocalyptic number.

It is an amenable number.

22016445525121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22016445525121 is an equidigital number, since it uses as much as digits as its factorization.

22016445525121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192000, while the sum is 40.

Adding to 22016445525121 its reverse (12152554461022), we get a palindrome (34168999986143).

The spelling of 22016445525121 in words is "twenty-two trillion, sixteen billion, four hundred forty-five million, five hundred twenty-five thousand, one hundred twenty-one".