12732120121 has 8 divisors (see below), whose sum is σ = 14552206400. Its totient is φ = 10912336848.

The previous prime is 12732120113. The next prime is 12732120133. The reversal of 12732120121 is 12102123721.

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

It is not a de Polignac number, because 12732120121 - 2³ = 12732120113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12732120092 and 12732120101.

It is not an unprimeable number, because it can be changed into a prime (12732120421) 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, 22855 + ... + 161203.

It is an arithmetic number, because the mean of its divisors is an integer number (1819025800).

Almost surely, 2^12732120121 is an apocalyptic number.

It is an amenable number.

12732120121 is a deficient number, since it is larger than the sum of its proper divisors (1820086279).

12732120121 is a wasteful number, since it uses less digits than its factorization.

12732120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151503.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 12732120121 its reverse (12102123721), we get a palindrome (24834243842).

The spelling of 12732120121 in words is "twelve billion, seven hundred thirty-two million, one hundred twenty thousand, one hundred twenty-one".