202102122222191 has 2 divisors, whose sum is σ = 202102122222192. Its totient is φ = 202102122222190.

The previous prime is 202102122222163. The next prime is 202102122222239. The reversal of 202102122222191 is 191222221201202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202102122222191 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202102122222691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051061111095 + 101051061111096.

It is an arithmetic number, because the mean of its divisors is an integer number (101051061111096).

Almost surely, 2^{202102122222191} is an apocalyptic number.

202102122222191 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102122222191 is an equidigital number, since it uses as much as digits as its factorization.

202102122222191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 202102122222191 its reverse (191222221201202), we get a palindrome (393324343423393).

The spelling of 202102122222191 in words is "two hundred two trillion, one hundred two billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred ninety-one".