102121101121187 has 2 divisors, whose sum is σ = 102121101121188. Its totient is φ = 102121101121186.

The previous prime is 102121101121181. The next prime is 102121101121213. The reversal of 102121101121187 is 781121101121201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102121101121187 - 2³² = 102116806153891 is a prime.

It is not a weakly prime, because it can be changed into another prime (102121101121181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060550560593 + 51060550560594.

It is an arithmetic number, because the mean of its divisors is an integer number (51060550560594).

Almost surely, 2^{102121101121187} is an apocalyptic number.

102121101121187 is a deficient number, since it is larger than the sum of its proper divisors (1).

102121101121187 is an equidigital number, since it uses as much as digits as its factorization.

102121101121187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 29.

Adding to 102121101121187 its reverse (781121101121201), we get a palindrome (883242202242388).

The spelling of 102121101121187 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, one hundred eighty-seven".