2100111211222 has 16 divisors (see below), whose sum is σ = 3194290252800. Its totient is φ = 1035383193000.

The previous prime is 2100111211207. The next prime is 2100111211229. The reversal of 2100111211222 is 2221121110012.

It is a junction number, because it is equal to n+sod(n) for n = 2100111211196 and 2100111211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100111211229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8730772 + ... + 8968087.

It is an arithmetic number, because the mean of its divisors is an integer number (199643140800).

Almost surely, 2^{2100111211222} is an apocalyptic number.

2100111211222 is a deficient number, since it is larger than the sum of its proper divisors (1094179041578).

2100111211222 is a wasteful number, since it uses less digits than its factorization.

2100111211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17699691.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2100111211222 its reverse (2221121110012), we get a palindrome (4321232321234).

The spelling of 2100111211222 in words is "two trillion, one hundred billion, one hundred eleven million, two hundred eleven thousand, two hundred twenty-two".