102222100081 has 2 divisors, whose sum is σ = 102222100082. Its totient is φ = 102222100080.

The previous prime is 102222100039. The next prime is 102222100111. The reversal of 102222100081 is 180001222201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98156890000 + 4065210081 = 313300^2 + 63759^2 .

It is a cyclic number.

It is not a de Polignac number, because 102222100081 - 2²⁵ = 102188545649 is a prime.

It is a super-2 number, since 2×102222100081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102222106081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111050040 + 51111050041.

It is an arithmetic number, because the mean of its divisors is an integer number (51111050041).

Almost surely, 2^102222100081 is an apocalyptic number.

It is an amenable number.

102222100081 is a deficient number, since it is larger than the sum of its proper divisors (1).

102222100081 is an equidigital number, since it uses as much as digits as its factorization.

102222100081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102222100081 its reverse (180001222201), we get a palindrome (282223322282).

The spelling of 102222100081 in words is "one hundred two billion, two hundred twenty-two million, one hundred thousand, eighty-one".