102210111211997 has 2 divisors, whose sum is σ = 102210111211998. Its totient is φ = 102210111211996.

The previous prime is 102210111211991. The next prime is 102210111212081. The reversal of 102210111211997 is 799112111012201.

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., 93935910738916 + 8274200473081 = 9692054^2 + 2876491^2 .

It is a cyclic number.

It is not a de Polignac number, because 102210111211997 - 2⁶ = 102210111211933 is a prime.

It is a super-3 number, since 3×102210111211997³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102210111211997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102210111211991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105055605998 + 51105055605999.

It is an arithmetic number, because the mean of its divisors is an integer number (51105055605999).

Almost surely, 2^{102210111211997} is an apocalyptic number.

It is an amenable number.

102210111211997 is a deficient number, since it is larger than the sum of its proper divisors (1).

102210111211997 is an equidigital number, since it uses as much as digits as its factorization.

102210111211997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 38.

The spelling of 102210111211997 in words is "one hundred two trillion, two hundred ten billion, one hundred eleven million, two hundred eleven thousand, nine hundred ninety-seven".