121166134156025 has 48 divisors (see below), whose sum is σ = 177251471846400. Its totient is φ = 80403939532800.

The previous prime is 121166134156009. The next prime is 121166134156033. The reversal of 121166134156025 is 520651431661121.

It is not a de Polignac number, because 121166134156025 - 2⁴ = 121166134156009 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 472112537 + ... + 472369113.

It is an arithmetic number, because the mean of its divisors is an integer number (3692738996800).

Almost surely, 2^{121166134156025} is an apocalyptic number.

It is an amenable number.

121166134156025 is a deficient number, since it is larger than the sum of its proper divisors (56085337690375).

121166134156025 is a wasteful number, since it uses less digits than its factorization.

121166134156025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343674 (or 343669 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 121166134156025 in words is "one hundred twenty-one trillion, one hundred sixty-six billion, one hundred thirty-four million, one hundred fifty-six thousand, twenty-five".