20020202112221 has 8 divisors (see below), whose sum is σ = 20166440482944. Its totient is φ = 19873965270880.

The previous prime is 20020202112173. The next prime is 20020202112233. The reversal of 20020202112221 is 12221120202002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020202112221 is a prime.

It is a super-2 number, since 2×20020202112221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20020202112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020202112241) 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, 51948986 + ... + 52332948.

It is an arithmetic number, because the mean of its divisors is an integer number (2520805060368).

Almost surely, 2^{20020202112221} is an apocalyptic number.

It is an amenable number.

20020202112221 is a deficient number, since it is larger than the sum of its proper divisors (146238370723).

20020202112221 is a wasteful number, since it uses less digits than its factorization.

20020202112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764691.

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

Adding to 20020202112221 its reverse (12221120202002), we get a palindrome (32241322314223).

The spelling of 20020202112221 in words is "twenty trillion, twenty billion, two hundred two million, one hundred twelve thousand, two hundred twenty-one".