20020020022221 has 8 divisors (see below), whose sum is σ = 27554436159744. Its totient is φ = 12916141949760.

The previous prime is 20020020022207. The next prime is 20020020022279. The reversal of 20020020022221 is 12222002002002.

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

It is not a de Polignac number, because 20020020022221 - 2¹⁷ = 20020019891149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020020022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020020022201) 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, 107634516156 + ... + 107634516341.

It is an arithmetic number, because the mean of its divisors is an integer number (3444304519968).

Almost surely, 2^{20020020022221} is an apocalyptic number.

It is an amenable number.

20020020022221 is a deficient number, since it is larger than the sum of its proper divisors (7534416137523).

20020020022221 is a wasteful number, since it uses less digits than its factorization.

20020020022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215269032531.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20020020022221 its reverse (12222002002002), we get a palindrome (32242022024223).

The spelling of 20020020022221 in words is "twenty trillion, twenty billion, twenty million, twenty-two thousand, two hundred twenty-one".