32242100221 has 4 divisors (see below), whose sum is σ = 32604371100. Its totient is φ = 31879829344.

The previous prime is 32242100131. The next prime is 32242100257. The reversal of 32242100221 is 12200124223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4642923321 + 27599176900 = 68139^2 + 166130^2 .

It is a cyclic number.

It is not a de Polignac number, because 32242100221 - 2⁹ = 32242099709 is a prime.

It is a super-2 number, since 2×32242100221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32242160221) 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, 181135306 + ... + 181135483.

It is an arithmetic number, because the mean of its divisors is an integer number (8151092775).

Almost surely, 2^32242100221 is an apocalyptic number.

It is an amenable number.

32242100221 is a deficient number, since it is larger than the sum of its proper divisors (362270879).

32242100221 is an equidigital number, since it uses as much as digits as its factorization.

32242100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362270878.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 32242100221 its reverse (12200124223), we get a palindrome (44442224444).

The spelling of 32242100221 in words is "thirty-two billion, two hundred forty-two million, one hundred thousand, two hundred twenty-one".