20021020222220 has 12 divisors (see below), whose sum is σ = 42044142466704. Its totient is φ = 8008408088880.

The previous prime is 20021020222187. The next prime is 20021020222261. The reversal of 20021020222220 is 2222202012002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500525505536 + ... + 500525505575.

It is an arithmetic number, because the mean of its divisors is an integer number (3503678538892).

Almost surely, 2^{20021020222220} is an apocalyptic number.

20021020222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021020222220 is an abundant number, since it is smaller than the sum of its proper divisors (22023122244484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021020222220 is a wasteful number, since it uses less digits than its factorization.

20021020222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001051011120 (or 1001051011118 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20021020222220 its reverse (2222202012002), we get a palindrome (22243222234222).

The spelling of 20021020222220 in words is "twenty trillion, twenty-one billion, twenty million, two hundred twenty-two thousand, two hundred twenty".