121335666533121 has 16 divisors (see below), whose sum is σ = 166153666521024. Its totient is φ = 78704063907264.

The previous prime is 121335666533093. The next prime is 121335666533143.

121335666533121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 121335666533121 - 2¹¹ = 121335666531073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121335666533171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99411871 + ... + 100625003.

It is an arithmetic number, because the mean of its divisors is an integer number (10384604157564).

Almost surely, 2^{121335666533121} is an apocalyptic number.

It is an amenable number.

121335666533121 is a deficient number, since it is larger than the sum of its proper divisors (44817999987903).

121335666533121 is a wasteful number, since it uses less digits than its factorization.

121335666533121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114240.

The product of its digits is 1749600, while the sum is 48.

The spelling of 121335666533121 in words is "one hundred twenty-one trillion, three hundred thirty-five billion, six hundred sixty-six million, five hundred thirty-three thousand, one hundred twenty-one".