102201791 has 2 divisors, whose sum is σ = 102201792. Its totient is φ = 102201790.

The previous prime is 102201787. The next prime is 102201797. The reversal of 102201791 is 197102201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102201791 - 2² = 102201787 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100895 + 51100896.

It is an arithmetic number, because the mean of its divisors is an integer number (51100896).

Almost surely, 2^102201791 is an apocalyptic number.

102201791 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201791 is an equidigital number, since it uses as much as digits as its factorization.

102201791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 102201791 is about 10109.4901454030. The cubic root of 102201791 is about 467.5407855215.

Adding to 102201791 its reverse (197102201), we get a palindrome (299303992).

The spelling of 102201791 in words is "one hundred two million, two hundred one thousand, seven hundred ninety-one".