102012211271 has 2 divisors, whose sum is σ = 102012211272. Its totient is φ = 102012211270.

The previous prime is 102012211247. The next prime is 102012211309. The reversal of 102012211271 is 172112210201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102012211271 - 2²² = 102008016967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102012211201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51006105635 + 51006105636.

It is an arithmetic number, because the mean of its divisors is an integer number (51006105636).

Almost surely, 2^102012211271 is an apocalyptic number.

102012211271 is a deficient number, since it is larger than the sum of its proper divisors (1).

102012211271 is an equidigital number, since it uses as much as digits as its factorization.

102012211271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 102012211271 its reverse (172112210201), we get a palindrome (274124421472).

The spelling of 102012211271 in words is "one hundred two billion, twelve million, two hundred eleven thousand, two hundred seventy-one".