220111220100 has 36 divisors (see below), whose sum is σ = 636855131024. Its totient is φ = 58696325280.

The previous prime is 220111220071. The next prime is 220111220123. The reversal of 220111220100 is 1022111022.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366851734 + ... + 366852333.

Almost surely, 2^220111220100 is an apocalyptic number.

220111220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220111220100 is an abundant number, since it is smaller than the sum of its proper divisors (416743910924).

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

220111220100 is a wasteful number, since it uses less digits than its factorization.

220111220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733704084 (or 733704077 counting only the distinct ones).

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

Adding to 220111220100 its reverse (1022111022), we get a palindrome (221133331122).

The spelling of 220111220100 in words is "two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, one hundred".