32100231221 has 8 divisors (see below), whose sum is σ = 34208573184. Its totient is φ = 30051279280.

The previous prime is 32100231211. The next prime is 32100231253. The reversal of 32100231221 is 12213200123.

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

It is not a de Polignac number, because 32100231221 - 2¹⁴ = 32100214837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32100231221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32100231211) 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, 14846390 + ... + 14848551.

It is an arithmetic number, because the mean of its divisors is an integer number (4276071648).

Almost surely, 2^32100231221 is an apocalyptic number.

It is an amenable number.

32100231221 is a deficient number, since it is larger than the sum of its proper divisors (2108341963).

32100231221 is a wasteful number, since it uses less digits than its factorization.

32100231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29695011.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 32100231221 its reverse (12213200123), we get a palindrome (44313431344).

The spelling of 32100231221 in words is "thirty-two billion, one hundred million, two hundred thirty-one thousand, two hundred twenty-one".