2222111221100 has 36 divisors (see below), whose sum is σ = 4837688196264. Its totient is φ = 885949217280.

The previous prime is 2222111221079. The next prime is 2222111221129. The reversal of 2222111221100 is 11221112222.

It is a zygodrome in base 10.

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, 36160037 + ... + 36221436.

It is an arithmetic number, because the mean of its divisors is an integer number (134380227674).

Almost surely, 2^{2222111221100} is an apocalyptic number.

2222111221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222111221100 is an abundant number, since it is smaller than the sum of its proper divisors (2615576975164).

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

2222111221100 is a wasteful number, since it uses less digits than its factorization.

2222111221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72381794 (or 72381787 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2222111221100 its reverse (11221112222), we get a palindrome (2233332333322).

It can be divided in two parts, 222211122 and 1100, that added together give a palindrome (222212222).

The spelling of 2222111221100 in words is "two trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred".