20022212100220 has 96 divisors (see below), whose sum is σ = 47391479815680. Its totient is φ = 7042439496960.

The previous prime is 20022212100193. The next prime is 20022212100229. The reversal of 20022212100220 is 2200121222002.

It is a junction number, because it is equal to n+sod(n) for n = 20022212100194 and 20022212100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022212100229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9299955 + ... + 11248714.

It is an arithmetic number, because the mean of its divisors is an integer number (493661248080).

Almost surely, 2^{20022212100220} is an apocalyptic number.

20022212100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022212100220 is an abundant number, since it is smaller than the sum of its proper divisors (27369267715460).

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

20022212100220 is a wasteful number, since it uses less digits than its factorization.

20022212100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20548835 (or 20548833 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20022212100220 its reverse (2200121222002), we get a palindrome (22222333322222).

The spelling of 20022212100220 in words is "twenty trillion, twenty-two billion, two hundred twelve million, one hundred thousand, two hundred twenty".