32101220221 has 8 divisors (see below), whose sum is σ = 38282200704. Its totient is φ = 26319012720.

The previous prime is 32101220197. The next prime is 32101220227. The reversal of 32101220221 is 12202210123.

It is a happy number.

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

It is not a de Polignac number, because 32101220221 - 2¹³ = 32101212029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32101220195 and 32101220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32101220227) 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, 99693070 + ... + 99693391.

It is an arithmetic number, because the mean of its divisors is an integer number (4785275088).

Almost surely, 2^32101220221 is an apocalyptic number.

It is an amenable number.

32101220221 is a deficient number, since it is larger than the sum of its proper divisors (6180980483).

32101220221 is a wasteful number, since it uses less digits than its factorization.

32101220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199386491.

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

Adding to 32101220221 its reverse (12202210123), we get a palindrome (44303430344).

The spelling of 32101220221 in words is "thirty-two billion, one hundred one million, two hundred twenty thousand, two hundred twenty-one".