20112210202220 has 48 divisors (see below), whose sum is σ = 42638337638400. Its totient is φ = 7968388768704.

The previous prime is 20112210202213. The next prime is 20112210202223. The reversal of 20112210202220 is 2220201221102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20112210202223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4980620 + ... + 8064179.

It is an arithmetic number, because the mean of its divisors is an integer number (888298700800).

Almost surely, 2^{20112210202220} is an apocalyptic number.

20112210202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112210202220 is an abundant number, since it is smaller than the sum of its proper divisors (22526127436180).

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

20112210202220 is a wasteful number, since it uses less digits than its factorization.

20112210202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13045542 (or 13045540 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20112210202220 its reverse (2220201221102), we get a palindrome (22332411423322).

The spelling of 20112210202220 in words is "twenty trillion, one hundred twelve billion, two hundred ten million, two hundred two thousand, two hundred twenty".