2111121111222 has 16 divisors (see below), whose sum is σ = 4691380247280. Its totient is φ = 703707037056.

The previous prime is 2111121111193. The next prime is 2111121111259. The reversal of 2111121111222 is 2221111211112.

It is a happy number.

2111121111222 is a `hidden beast` number, since 211 + 1 + 121 + 111 + 222 = 666.

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 = 2111121111195 and 2111121111204.

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, 19547417643 + ... + 19547417750.

It is an arithmetic number, because the mean of its divisors is an integer number (293211265455).

Almost surely, 2^{2111121111222} is an apocalyptic number.

2111121111222 is an abundant number, since it is smaller than the sum of its proper divisors (2580259136058).

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

2111121111222 is a wasteful number, since it uses less digits than its factorization.

2111121111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39094835404 (or 39094835398 counting only the distinct ones).

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

Adding to 2111121111222 its reverse (2221111211112), we get a palindrome (4332232322334).

It can be divided in two parts, 21111211112 and 22, that multiplied together give a palindrome (464446644464).

The spelling of 2111121111222 in words is "two trillion, one hundred eleven billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twenty-two".