20022112222221 has 8 divisors (see below), whose sum is σ = 26797655903040. Its totient is φ = 13297321678112.

The previous prime is 20022112222159. The next prime is 20022112222291. The reversal of 20022112222221 is 12222221122002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20022112222221 - 2²² = 20022108027917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022112222291) 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, 12688283256 + ... + 12688284833.

It is an arithmetic number, because the mean of its divisors is an integer number (3349706987880).

Almost surely, 2^{20022112222221} is an apocalyptic number.

It is an amenable number.

20022112222221 is a deficient number, since it is larger than the sum of its proper divisors (6775543680819).

20022112222221 is a wasteful number, since it uses less digits than its factorization.

20022112222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25376568355.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20022112222221 its reverse (12222221122002), we get a palindrome (32244333344223).

The spelling of 20022112222221 in words is "twenty trillion, twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty-one".