32220423421 has 4 divisors (see below), whose sum is σ = 33916235200. Its totient is φ = 30524611644.

The previous prime is 32220423377. The next prime is 32220423427. The reversal of 32220423421 is 12432402223.

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 32220423421 - 2¹⁹ = 32219899133 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 (32220423427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847905861 + ... + 847905898.

It is an arithmetic number, because the mean of its divisors is an integer number (8479058800).

Almost surely, 2^32220423421 is an apocalyptic number.

It is an amenable number.

32220423421 is a deficient number, since it is larger than the sum of its proper divisors (1695811779).

32220423421 is a wasteful number, since it uses less digits than its factorization.

32220423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695811778.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 32220423421 its reverse (12432402223), we get a palindrome (44652825644).

The spelling of 32220423421 in words is "thirty-two billion, two hundred twenty million, four hundred twenty-three thousand, four hundred twenty-one".