2212111111122 has 48 divisors (see below), whose sum is σ = 5229468578880. Its totient is φ = 670228711200.

The previous prime is 2212111111097. The next prime is 2212111111127. The reversal of 2212111111122 is 2211111112122.

It is a happy number.

2212111111122 is a `hidden beast` number, since 221 + 211 + 1 + 111 + 122 = 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 = 2212111111095 and 2212111111104.

It is not an unprimeable number, because it can be changed into a prime (2212111111127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336547 + ... + 2130137.

It is an arithmetic number, because the mean of its divisors is an integer number (108947262060).

Almost surely, 2^{2212111111122} is an apocalyptic number.

2212111111122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2212111111122 is an abundant number, since it is smaller than the sum of its proper divisors (3017357467758).

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

2212111111122 is a wasteful number, since it uses less digits than its factorization.

2212111111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799839 (or 1799836 counting only the distinct ones).

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

Adding to 2212111111122 its reverse (2211111112122), we get a palindrome (4423222223244).

The spelling of 2212111111122 in words is "two trillion, two hundred twelve billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty-two".