102221121119989 has 2 divisors, whose sum is σ = 102221121119990. Its totient is φ = 102221121119988.

The previous prime is 102221121119983. The next prime is 102221121120007. The reversal of 102221121119989 is 989911121122201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89812903519089 + 12408217600900 = 9476967^2 + 3522530^2 .

It is a cyclic number.

It is not a de Polignac number, because 102221121119989 - 2⁹ = 102221121119477 is a prime.

It is a super-2 number, since 2×102221121119989² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102221121119983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110560559994 + 51110560559995.

It is an arithmetic number, because the mean of its divisors is an integer number (51110560559995).

Almost surely, 2^{102221121119989} is an apocalyptic number.

It is an amenable number.

102221121119989 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221121119989 is an equidigital number, since it uses as much as digits as its factorization.

102221121119989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 49.

The spelling of 102221121119989 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred nineteen thousand, nine hundred eighty-nine".