32121200002221 has 24 divisors (see below), whose sum is σ = 50655749040000. Its totient is φ = 19451807481600.

The previous prime is 32121200002189. The next prime is 32121200002223. The reversal of 32121200002221 is 12220000212123.

32121200002221 is a `hidden beast` number, since 321 + 2 + 120 + 0 + 0 + 0 + 2 + 221 = 666.

It is not a de Polignac number, because 32121200002221 - 2⁵ = 32121200002189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32121200002194 and 32121200002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121200002223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129762885 + ... + 130010186.

It is an arithmetic number, because the mean of its divisors is an integer number (2110656210000).

Almost surely, 2^{32121200002221} is an apocalyptic number.

It is an amenable number.

32121200002221 is a deficient number, since it is larger than the sum of its proper divisors (18534549037779).

32121200002221 is a wasteful number, since it uses less digits than its factorization.

32121200002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259774337 (or 259774334 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 32121200002221 its reverse (12220000212123), we get a palindrome (44341200214344).

The spelling of 32121200002221 in words is "thirty-two trillion, one hundred twenty-one billion, two hundred million, two thousand, two hundred twenty-one".