222020640442 has 16 divisors (see below), whose sum is σ = 333419038272. Its totient is φ = 110881033920.

The previous prime is 222020640341. The next prime is 222020640449. The reversal of 222020640442 is 244046020222.

It is a self number, because there is not a number n which added to its sum of digits gives 222020640442.

It is not an unprimeable number, because it can be changed into a prime (222020640449) 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, 6796873 + ... + 6829459.

It is an arithmetic number, because the mean of its divisors is an integer number (20838689892).

Almost surely, 2^222020640442 is an apocalyptic number.

222020640442 is a deficient number, since it is larger than the sum of its proper divisors (111398397830).

222020640442 is a wasteful number, since it uses less digits than its factorization.

222020640442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36453.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 222020640442 its reverse (244046020222), we get a palindrome (466066660664).

The spelling of 222020640442 in words is "two hundred twenty-two billion, twenty million, six hundred forty thousand, four hundred forty-two".