121201102100087 has 2 divisors, whose sum is σ = 121201102100088. Its totient is φ = 121201102100086.

The previous prime is 121201102100077. The next prime is 121201102100153. The reversal of 121201102100087 is 780001201102121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201102100087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201102100077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600551050043 + 60600551050044.

It is an arithmetic number, because the mean of its divisors is an integer number (60600551050044).

Almost surely, 2^{121201102100087} is an apocalyptic number.

121201102100087 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201102100087 is an equidigital number, since it uses as much as digits as its factorization.

121201102100087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 26.

The spelling of 121201102100087 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred two million, one hundred thousand, eighty-seven".