121421054303387 has 2 divisors, whose sum is σ = 121421054303388. Its totient is φ = 121421054303386.

The previous prime is 121421054303321. The next prime is 121421054303399. The reversal of 121421054303387 is 783303450124121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121421054303387 - 2²⁴ = 121421037526171 is a prime.

It is not a weakly prime, because it can be changed into another prime (121421054333387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60710527151693 + 60710527151694.

It is an arithmetic number, because the mean of its divisors is an integer number (60710527151694).

Almost surely, 2^{121421054303387} is an apocalyptic number.

121421054303387 is a deficient number, since it is larger than the sum of its proper divisors (1).

121421054303387 is an equidigital number, since it uses as much as digits as its factorization.

121421054303387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 121421054303387 in words is "one hundred twenty-one trillion, four hundred twenty-one billion, fifty-four million, three hundred three thousand, three hundred eighty-seven".