32221013 has 4 divisors (see below), whose sum is σ = 35150208. Its totient is φ = 29291820.

The previous prime is 32221003. The next prime is 32221031. The reversal of 32221013 is 31012223.

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.

It is a cyclic number.

It is not a de Polignac number, because 32221013 - 2⁶ = 32220949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32221003) 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, 1464581 + ... + 1464602.

It is an arithmetic number, because the mean of its divisors is an integer number (8787552).

Almost surely, 2^32221013 is an apocalyptic number.

It is an amenable number.

32221013 is a deficient number, since it is larger than the sum of its proper divisors (2929195).

32221013 is a wasteful number, since it uses less digits than its factorization.

32221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929194.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 32221013 is about 5676.3556090153. The cubic root of 32221013 is about 318.2094430016.

Adding to 32221013 its reverse (31012223), we get a palindrome (63233236).

It can be divided in two parts, 322210 and 13, that added together give a palindrome (322223).

The spelling of 32221013 in words is "thirty-two million, two hundred twenty-one thousand, thirteen".