32212420421 has 4 divisors (see below), whose sum is σ = 32220916812. Its totient is φ = 32203924032.

The previous prime is 32212420417. The next prime is 32212420423. The reversal of 32212420421 is 12402421223.

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 15615251521 + 16597168900 = 124961^2 + 128830^2 .

It is a cyclic number.

It is not a de Polignac number, because 32212420421 - 2² = 32212420417 is a prime.

It is a super-3 number, since 3×32212420421³ (a number of 33 digits) contains 333 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 (32212420423) 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, 4242506 + ... + 4250091.

It is an arithmetic number, because the mean of its divisors is an integer number (8055229203).

Almost surely, 2^32212420421 is an apocalyptic number.

It is an amenable number.

32212420421 is a deficient number, since it is larger than the sum of its proper divisors (8496391).

32212420421 is an equidigital number, since it uses as much as digits as its factorization.

32212420421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8496390.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 32212420421 its reverse (12402421223), we get a palindrome (44614841644).

The spelling of 32212420421 in words is "thirty-two billion, two hundred twelve million, four hundred twenty thousand, four hundred twenty-one".