102121120111139 has 2 divisors, whose sum is σ = 102121120111140. Its totient is φ = 102121120111138.

The previous prime is 102121120111103. The next prime is 102121120111169. The reversal of 102121120111139 is 931111021121201.

It is a strong prime.

It is an emirp because it is prime and its reverse (931111021121201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102121120111139 - 2²⁴ = 102121103333923 is a prime.

It is not a weakly prime, because it can be changed into another prime (102121120111169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060560055569 + 51060560055570.

It is an arithmetic number, because the mean of its divisors is an integer number (51060560055570).

Almost surely, 2^{102121120111139} is an apocalyptic number.

102121120111139 is a deficient number, since it is larger than the sum of its proper divisors (1).

102121120111139 is an equidigital number, since it uses as much as digits as its factorization.

102121120111139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 26.

The spelling of 102121120111139 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred twenty million, one hundred eleven thousand, one hundred thirty-nine".