2220111212100 has 36 divisors (see below), whose sum is σ = 6423521774544. Its totient is φ = 592029656480.

The previous prime is 2220111212093. The next prime is 2220111212113. The reversal of 2220111212100 is 12121110222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2220111212100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3700185054 + ... + 3700185653.

It is an arithmetic number, because the mean of its divisors is an integer number (178431160404).

Almost surely, 2^{2220111212100} is an apocalyptic number.

2220111212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220111212100 is an abundant number, since it is smaller than the sum of its proper divisors (4203410562444).

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

2220111212100 is a wasteful number, since it uses less digits than its factorization.

2220111212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400370724 (or 7400370717 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2220111212100 its reverse (12121110222), we get a palindrome (2232232322322).

The spelling of 2220111212100 in words is "two trillion, two hundred twenty billion, one hundred eleven million, two hundred twelve thousand, one hundred".