220112211221100 has 144 divisors (see below), whose sum is σ = 771949088346240. Its totient is φ = 53360536046400.

The previous prime is 220112211221051. The next prime is 220112211221131. The reversal of 220112211221100 is 1122112211022.

220112211221100 is a `hidden beast` number, since 2 + 20 + 112 + 211 + 221 + 100 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3705563082 + ... + 3705622481.

It is an arithmetic number, because the mean of its divisors is an integer number (5360757557960).

Almost surely, 2^{220112211221100} is an apocalyptic number.

220112211221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220112211221100 is an abundant number, since it is smaller than the sum of its proper divisors (551836877125140).

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

220112211221100 is a wasteful number, since it uses less digits than its factorization.

220112211221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7411185597 (or 7411185584 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 220112211221100 its reverse (1122112211022), we get a palindrome (221234323432122).

It can be divided in two parts, 2 and 20112211221100, that added together give a palindrome (20112211221102).

The spelling of 220112211221100 in words is "two hundred twenty trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, one hundred".