121415510087 has 2 divisors, whose sum is σ = 121415510088. Its totient is φ = 121415510086.

The previous prime is 121415510011. The next prime is 121415510113. The reversal of 121415510087 is 780015514121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121415510087 - 2²² = 121411315783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121415510287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60707755043 + 60707755044.

It is an arithmetic number, because the mean of its divisors is an integer number (60707755044).

Almost surely, 2^121415510087 is an apocalyptic number.

121415510087 is a deficient number, since it is larger than the sum of its proper divisors (1).

121415510087 is an equidigital number, since it uses as much as digits as its factorization.

121415510087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 35.

The spelling of 121415510087 in words is "one hundred twenty-one billion, four hundred fifteen million, five hundred ten thousand, eighty-seven".