2100111122222 has 16 divisors (see below), whose sum is σ = 3369856906080. Its totient is φ = 978099053568.

The previous prime is 2100111122167. The next prime is 2100111122237. The reversal of 2100111122222 is 2222211110012.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 2100111122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318388322 + ... + 318394917.

It is an arithmetic number, because the mean of its divisors is an integer number (210616056630).

Almost surely, 2^{2100111122222} is an apocalyptic number.

2100111122222 is a deficient number, since it is larger than the sum of its proper divisors (1269745783858).

2100111122222 is a wasteful number, since it uses less digits than its factorization.

2100111122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636783355.

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

Adding to 2100111122222 its reverse (2222211110012), we get a palindrome (4322322232234).

The spelling of 2100111122222 in words is "two trillion, one hundred billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-two".