2111111112222 has 48 divisors (see below), whose sum is σ = 5228057339232. Its totient is φ = 603111821760.

The previous prime is 2111111112197. The next prime is 2111111112233. The reversal of 2111111112222 is 2222111111112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2111111112195 and 2111111112204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350148 + ... + 2084424.

It is an arithmetic number, because the mean of its divisors is an integer number (108917861234).

Almost surely, 2^{2111111112222} is an apocalyptic number.

2111111112222 is an abundant number, since it is smaller than the sum of its proper divisors (3116946227010).

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

2111111112222 is a wasteful number, since it uses less digits than its factorization.

2111111112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743953 (or 1743950 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 2111111112222 its reverse (2222111111112), we get a palindrome (4333222223334).

It can be divided in two parts, 2111111112 and 222, that multiplied together give a palindrome (468666666864).

The spelling of 2111111112222 in words is "two trillion, one hundred eleven billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-two".