32220001 has 6 divisors (see below), whose sum is σ = 35415506. Its totient is φ = 29290800.

The previous prime is 32219989. The next prime is 32220037. The reversal of 32220001 is 10002223.

It can be written as a sum of positive squares in only one way, i.e., 32216976 + 3025 = 5676^2 + 55^2 .

It is not a de Polignac number, because 32220001 - 2⁵ = 32219969 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 32220001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32220701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133020 + ... + 133261.

Almost surely, 2^32220001 is an apocalyptic number.

It is an amenable number.

32220001 is a deficient number, since it is larger than the sum of its proper divisors (3195505).

32220001 is a wasteful number, since it uses less digits than its factorization.

32220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266303 (or 266292 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 32220001 is about 5676.2664666134. The cubic root of 32220001 is about 318.2061115181.

Adding to 32220001 its reverse (10002223), we get a palindrome (42222224).

The spelling of 32220001 in words is "thirty-two million, two hundred twenty thousand, one".