121302102091 has 2 divisors, whose sum is σ = 121302102092. Its totient is φ = 121302102090.

The previous prime is 121302102079. The next prime is 121302102121. The reversal of 121302102091 is 190201203121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121302102091 - 2⁹ = 121302101579 is a prime.

It is not a weakly prime, because it can be changed into another prime (121302102041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60651051045 + 60651051046.

It is an arithmetic number, because the mean of its divisors is an integer number (60651051046).

Almost surely, 2^121302102091 is an apocalyptic number.

121302102091 is a deficient number, since it is larger than the sum of its proper divisors (1).

121302102091 is an equidigital number, since it uses as much as digits as its factorization.

121302102091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 121302102091 in words is "one hundred twenty-one billion, three hundred two million, one hundred two thousand, ninety-one".