121134525555421 has 8 divisors (see below), whose sum is σ = 139783530184064. Its totient is φ = 102821539028400.

The previous prime is 121134525555401. The next prime is 121134525555427. The reversal of 121134525555421 is 124555525431121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121134525555421 - 2²⁹ = 121133988684509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121134525555427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84004524630 + ... + 84004526071.

It is an arithmetic number, because the mean of its divisors is an integer number (17472941273008).

Almost surely, 2^{121134525555421} is an apocalyptic number.

It is an amenable number.

121134525555421 is a deficient number, since it is larger than the sum of its proper divisors (18649004628643).

121134525555421 is a wasteful number, since it uses less digits than its factorization.

121134525555421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168009050811.

The product of its digits is 1200000, while the sum is 46.

The spelling of 121134525555421 in words is "one hundred twenty-one trillion, one hundred thirty-four billion, five hundred twenty-five million, five hundred fifty-five thousand, four hundred twenty-one".