32121200221 has 4 divisors (see below), whose sum is σ = 35041309344. Its totient is φ = 29201091100.

The previous prime is 32121200207. The next prime is 32121200249. The reversal of 32121200221 is 12200212123.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12200212123 = 11 ⋅1109110193.

It is a cyclic number.

It is not a de Polignac number, because 32121200221 - 2⁷ = 32121200093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32121200195 and 32121200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121200621) 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, 1460054545 + ... + 1460054566.

It is an arithmetic number, because the mean of its divisors is an integer number (8760327336).

Almost surely, 2^32121200221 is an apocalyptic number.

It is an amenable number.

32121200221 is a deficient number, since it is larger than the sum of its proper divisors (2920109123).

32121200221 is a wasteful number, since it uses less digits than its factorization.

32121200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920109122.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 32121200221 its reverse (12200212123), we get a palindrome (44321412344).

The spelling of 32121200221 in words is "thirty-two billion, one hundred twenty-one million, two hundred thousand, two hundred twenty-one".