32001213121 has 4 divisors (see below), whose sum is σ = 32007508992. Its totient is φ = 31994917252.

The previous prime is 32001213077. The next prime is 32001213157. The reversal of 32001213121 is 12131210023.

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 32001213121 - 2¹⁵ = 32001180353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32001213095 and 32001213104.

It is not an unprimeable number, because it can be changed into a prime (32001213191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3140305 + ... + 3150478.

It is an arithmetic number, because the mean of its divisors is an integer number (8001877248).

Almost surely, 2^32001213121 is an apocalyptic number.

It is an amenable number.

32001213121 is a deficient number, since it is larger than the sum of its proper divisors (6295871).

32001213121 is an equidigital number, since it uses as much as digits as its factorization.

32001213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295870.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 32001213121 its reverse (12131210023), we get a palindrome (44132423144).

The spelling of 32001213121 in words is "thirty-two billion, one million, two hundred thirteen thousand, one hundred twenty-one".