121055502455511 has 32 divisors (see below), whose sum is σ = 181382251276800. Its totient is φ = 71256188217984.

The previous prime is 121055502455497. The next prime is 121055502455527. The reversal of 121055502455511 is 115554205550121.

It is not a de Polignac number, because 121055502455511 - 2¹¹ = 121055502453463 is a prime.

It is a super-2 number, since 2×121055502455511² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121055502455311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131388265 + ... + 132306413.

It is an arithmetic number, because the mean of its divisors is an integer number (5668195352400).

Almost surely, 2^{121055502455511} is an apocalyptic number.

121055502455511 is a deficient number, since it is larger than the sum of its proper divisors (60326748821289).

121055502455511 is a wasteful number, since it uses less digits than its factorization.

121055502455511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065175.

The product of its (nonzero) digits is 250000, while the sum is 42.

The spelling of 121055502455511 in words is "one hundred twenty-one trillion, fifty-five billion, five hundred two million, four hundred fifty-five thousand, five hundred eleven".