102121204402127 has 2 divisors, whose sum is σ = 102121204402128. Its totient is φ = 102121204402126.

The previous prime is 102121204402117. The next prime is 102121204402187. The reversal of 102121204402127 is 721204402121201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102121204402127 - 2⁸ = 102121204401871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102121204402127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102121204402117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060602201063 + 51060602201064.

It is an arithmetic number, because the mean of its divisors is an integer number (51060602201064).

Almost surely, 2^{102121204402127} is an apocalyptic number.

102121204402127 is a deficient number, since it is larger than the sum of its proper divisors (1).

102121204402127 is an equidigital number, since it uses as much as digits as its factorization.

102121204402127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 29.

Adding to 102121204402127 its reverse (721204402121201), we get a palindrome (823325606523328).

The spelling of 102121204402127 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred four million, four hundred two thousand, one hundred twenty-seven".