102211969427 has 2 divisors, whose sum is σ = 102211969428. Its totient is φ = 102211969426.

The previous prime is 102211969417. The next prime is 102211969451. The reversal of 102211969427 is 724969112201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102211969427 is a prime.

It is not a weakly prime, because it can be changed into another prime (102211969417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105984713 + 51105984714.

It is an arithmetic number, because the mean of its divisors is an integer number (51105984714).

Almost surely, 2^102211969427 is an apocalyptic number.

102211969427 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211969427 is an equidigital number, since it uses as much as digits as its factorization.

102211969427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 102211969427 in words is "one hundred two billion, two hundred eleven million, nine hundred sixty-nine thousand, four hundred twenty-seven".