102126025091 has 2 divisors, whose sum is σ = 102126025092. Its totient is φ = 102126025090.

The previous prime is 102126025051. The next prime is 102126025129. The reversal of 102126025091 is 190520621201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102126025091 is a prime.

It is not a weakly prime, because it can be changed into another prime (102126025021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51063012545 + 51063012546.

It is an arithmetic number, because the mean of its divisors is an integer number (51063012546).

Almost surely, 2^102126025091 is an apocalyptic number.

102126025091 is a deficient number, since it is larger than the sum of its proper divisors (1).

102126025091 is an equidigital number, since it uses as much as digits as its factorization.

102126025091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

Adding to 102126025091 its reverse (190520621201), we get a palindrome (292646646292).

The spelling of 102126025091 in words is "one hundred two billion, one hundred twenty-six million, twenty-five thousand, ninety-one".