220011221100 has 72 divisors (see below), whose sum is σ = 694435428288. Its totient is φ = 53336052800.

The previous prime is 220011221077. The next prime is 220011221219. The reversal of 220011221100 is 1122110022.

220011221100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33331734 + ... + 33338333.

It is an arithmetic number, because the mean of its divisors is an integer number (9644936504).

Almost surely, 2^220011221100 is an apocalyptic number.

220011221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220011221100 is an abundant number, since it is smaller than the sum of its proper divisors (474424207188).

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

220011221100 is a wasteful number, since it uses less digits than its factorization.

220011221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66670095 (or 66670088 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 220011221100 its reverse (1122110022), we get a palindrome (221133331122).

The spelling of 220011221100 in words is "two hundred twenty billion, eleven million, two hundred twenty-one thousand, one hundred".