10102247891 has 2 divisors, whose sum is σ = 10102247892. Its totient is φ = 10102247890.

The previous prime is 10102247843. The next prime is 10102247923. The reversal of 10102247891 is 19874220101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10102247891 is a prime.

It is not a weakly prime, because it can be changed into another prime (10102447891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051123945 + 5051123946.

It is an arithmetic number, because the mean of its divisors is an integer number (5051123946).

Almost surely, 2^10102247891 is an apocalyptic number.

10102247891 is a deficient number, since it is larger than the sum of its proper divisors (1).

10102247891 is an equidigital number, since it uses as much as digits as its factorization.

10102247891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

Adding to 10102247891 its reverse (19874220101), we get a palindrome (29976467992).

The spelling of 10102247891 in words is "ten billion, one hundred two million, two hundred forty-seven thousand, eight hundred ninety-one".