20020222120221 has 12 divisors (see below), whose sum is σ = 29012294383072. Its totient is φ = 13303339778376.

The previous prime is 20020222120181. The next prime is 20020222120229. The reversal of 20020222120221 is 12202122202002.

20020222120221 is a `hidden beast` number, since 2 + 0 + 0 + 202 + 221 + 20 + 221 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-20020222120221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020222120194 and 20020222120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020222120229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3622911121 + ... + 3622916646.

Almost surely, 2^{20020222120221} is an apocalyptic number.

It is an amenable number.

20020222120221 is a deficient number, since it is larger than the sum of its proper divisors (8992072262851).

20020222120221 is a wasteful number, since it uses less digits than its factorization.

20020222120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7245828080 (or 7245828077 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20020222120221 its reverse (12202122202002), we get a palindrome (32222344322223).

The spelling of 20020222120221 in words is "twenty trillion, twenty billion, two hundred twenty-two million, one hundred twenty thousand, two hundred twenty-one".