221210032422 has 16 divisors (see below), whose sum is σ = 443405415600. Its totient is φ = 73572452352.

The previous prime is 221210032391. The next prime is 221210032429. The reversal of 221210032422 is 224230012122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210032429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41053363 + ... + 41058750.

It is an arithmetic number, because the mean of its divisors is an integer number (27712838475).

Almost surely, 2^221210032422 is an apocalyptic number.

221210032422 is an abundant number, since it is smaller than the sum of its proper divisors (222195383178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221210032422 is a wasteful number, since it uses less digits than its factorization.

221210032422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82112567.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221210032422 its reverse (224230012122), we get a palindrome (445440044544).

The spelling of 221210032422 in words is "two hundred twenty-one billion, two hundred ten million, thirty-two thousand, four hundred twenty-two".