121151553411055 has 32 divisors (see below), whose sum is σ = 155239259313600. Its totient is φ = 90599791027200.

The previous prime is 121151553411041. The next prime is 121151553411067. The reversal of 121151553411055 is 550114355151121.

It is not a de Polignac number, because 121151553411055 - 2⁹ = 121151553410543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121151553410999 and 121151553411017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77002620 + ... + 78560209.

It is an arithmetic number, because the mean of its divisors is an integer number (4851226853550).

Almost surely, 2^{121151553411055} is an apocalyptic number.

121151553411055 is a deficient number, since it is larger than the sum of its proper divisors (34087705902545).

121151553411055 is a wasteful number, since it uses less digits than its factorization.

121151553411055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155563035.

The product of its (nonzero) digits is 75000, while the sum is 40.

The spelling of 121151553411055 in words is "one hundred twenty-one trillion, one hundred fifty-one billion, five hundred fifty-three million, four hundred eleven thousand, fifty-five".