102210021971 has 2 divisors, whose sum is σ = 102210021972. Its totient is φ = 102210021970.

The previous prime is 102210021959. The next prime is 102210021989. The reversal of 102210021971 is 179120012201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102210021971 - 2¹⁰ = 102210020947 is a prime.

It is a super-3 number, since 3×102210021971³ (a number of 34 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 102210021971.

It is not a weakly prime, because it can be changed into another prime (102210024971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105010985 + 51105010986.

It is an arithmetic number, because the mean of its divisors is an integer number (51105010986).

Almost surely, 2^102210021971 is an apocalyptic number.

102210021971 is a deficient number, since it is larger than the sum of its proper divisors (1).

102210021971 is an equidigital number, since it uses as much as digits as its factorization.

102210021971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 102210021971 in words is "one hundred two billion, two hundred ten million, twenty-one thousand, nine hundred seventy-one".