102121011101959 has 2 divisors, whose sum is σ = 102121011101960. Its totient is φ = 102121011101958.

The previous prime is 102121011101933. The next prime is 102121011102017. The reversal of 102121011101959 is 959101110121201.

It is a weak prime.

It is an emirp because it is prime and its reverse (959101110121201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102121011101959 - 2¹⁷ = 102121010970887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102121011105959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060505550979 + 51060505550980.

It is an arithmetic number, because the mean of its divisors is an integer number (51060505550980).

Almost surely, 2^{102121011101959} is an apocalyptic number.

102121011101959 is a deficient number, since it is larger than the sum of its proper divisors (1).

102121011101959 is an equidigital number, since it uses as much as digits as its factorization.

102121011101959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 34.

The spelling of 102121011101959 in words is "one hundred two trillion, one hundred twenty-one billion, eleven million, one hundred one thousand, nine hundred fifty-nine".