20020222111221 has 20 divisors (see below), whose sum is σ = 30871485473664. Its totient is φ = 12916272328200.

The previous prime is 20020222111181. The next prime is 20020222111231. The reversal of 20020222111221 is 12211122202002.

It is a happy number.

20020222111221 is a `hidden beast` number, since 20 + 0 + 202 + 221 + 1 + 1 + 221 = 666.

It is not a de Polignac number, because 20020222111221 - 2⁶ = 20020222111157 is a prime.

It is a super-2 number, since 2×20020222111221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20020222111194 and 20020222111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020222111231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3986501295 + ... + 3986506316.

Almost surely, 2^{20020222111221} is an apocalyptic number.

It is an amenable number.

20020222111221 is a deficient number, since it is larger than the sum of its proper divisors (10851263362443).

20020222111221 is an equidigital number, since it uses as much as digits as its factorization.

20020222111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7973007654 (or 7973007645 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20020222111221 its reverse (12211122202002), we get a palindrome (32231344313223).

The spelling of 20020222111221 in words is "twenty trillion, twenty billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-one".