20021000110220 has 12 divisors (see below), whose sum is σ = 42044100231504. Its totient is φ = 8008400044080.

The previous prime is 20021000110201. The next prime is 20021000110231. The reversal of 20021000110220 is 2201100012002.

It is a happy number.

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, 500525002736 + ... + 500525002775.

It is an arithmetic number, because the mean of its divisors is an integer number (3503675019292).

Almost surely, 2^{20021000110220} is an apocalyptic number.

20021000110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021000110220 is an abundant number, since it is smaller than the sum of its proper divisors (22023100121284).

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

20021000110220 is a wasteful number, since it uses less digits than its factorization.

20021000110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001050005520 (or 1001050005518 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20021000110220 its reverse (2201100012002), we get a palindrome (22222100122222).

The spelling of 20021000110220 in words is "twenty trillion, twenty-one billion, one hundred ten thousand, two hundred twenty".