20012222100220 has 96 divisors (see below), whose sum is σ = 52188070072320. Its totient is φ = 6290526251520.

The previous prime is 20012222100187. The next prime is 20012222100223. The reversal of 20012222100220 is 2200122221002.

It is a junction number, because it is equal to n+sod(n) for n = 20012222100194 and 20012222100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012222100223) 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, 121262569 + ... + 121427488.

It is an arithmetic number, because the mean of its divisors is an integer number (543625729920).

Almost surely, 2^{20012222100220} is an apocalyptic number.

20012222100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012222100220 is an abundant number, since it is smaller than the sum of its proper divisors (32175847972100).

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

20012222100220 is a wasteful number, since it uses less digits than its factorization.

20012222100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242690123 (or 242690121 counting only the distinct ones).

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

Adding to 20012222100220 its reverse (2200122221002), we get a palindrome (22212344321222).

The spelling of 20012222100220 in words is "twenty trillion, twelve billion, two hundred twenty-two million, one hundred thousand, two hundred twenty".