20021120012222 has 32 divisors (see below), whose sum is σ = 36129133728000. Its totient is φ = 8128696500288.

The previous prime is 20021120012207. The next prime is 20021120012251. The reversal of 20021120012222 is 22221002112002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20021120012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11601893 + ... + 13215375.

It is an arithmetic number, because the mean of its divisors is an integer number (1129035429000).

Almost surely, 2^{20021120012222} is an apocalyptic number.

20021120012222 is a deficient number, since it is larger than the sum of its proper divisors (16108013715778).

20021120012222 is a wasteful number, since it uses less digits than its factorization.

20021120012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660160.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20021120012222 its reverse (22221002112002), we get a palindrome (42242122124224).

The spelling of 20021120012222 in words is "twenty trillion, twenty-one billion, one hundred twenty million, twelve thousand, two hundred twenty-two".