84132408121 has 4 divisors (see below), whose sum is σ = 85558381200. Its totient is φ = 82706435044.

The previous prime is 84132408091. The next prime is 84132408137. The reversal of 84132408121 is 12180423148.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84132408121 - 2¹³ = 84132399929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84132478121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712986451 + ... + 712986568.

It is an arithmetic number, because the mean of its divisors is an integer number (21389595300).

Almost surely, 2^84132408121 is an apocalyptic number.

It is an amenable number.

84132408121 is a deficient number, since it is larger than the sum of its proper divisors (1425973079).

84132408121 is a wasteful number, since it uses less digits than its factorization.

84132408121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425973078.

The product of its (nonzero) digits is 12288, while the sum is 34.

The spelling of 84132408121 in words is "eighty-four billion, one hundred thirty-two million, four hundred eight thousand, one hundred twenty-one".