2211112011222 has 12 divisors (see below), whose sum is σ = 4790742691020. Its totient is φ = 737037337068.

The previous prime is 2211112011221. The next prime is 2211112011247. The reversal of 2211112011222 is 2221102111122.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 122839556179 = 2211112011222 / (2 + 2 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2211112011195 and 2211112011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211112011221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61419778072 + ... + 61419778107.

It is an arithmetic number, because the mean of its divisors is an integer number (399228557585).

Almost surely, 2^{2211112011222} is an apocalyptic number.

2211112011222 is an abundant number, since it is smaller than the sum of its proper divisors (2579630679798).

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

2211112011222 is a wasteful number, since it uses less digits than its factorization.

2211112011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122839556187 (or 122839556184 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211112011222 its reverse (2221102111122), we get a palindrome (4432214122344).

The spelling of 2211112011222 in words is "two trillion, two hundred eleven billion, one hundred twelve million, eleven thousand, two hundred twenty-two".