2111212222212 has 96 divisors (see below), whose sum is σ = 5214192721920. Its totient is φ = 663003169920.

The previous prime is 2111212222159. The next prime is 2111212222241. The reversal of 2111212222212 is 2122222121112.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206107563 + ... + 206117805.

It is an arithmetic number, because the mean of its divisors is an integer number (54314507520).

Almost surely, 2^{2111212222212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111212222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2607096360960).

2111212222212 is an abundant number, since it is smaller than the sum of its proper divisors (3102980499708).

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

2111212222212 is a wasteful number, since it uses less digits than its factorization.

2111212222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15193 (or 15191 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 2111212222212 its reverse (2122222121112), we get a palindrome (4233434343324).

The spelling of 2111212222212 in words is "two trillion, one hundred eleven billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twelve".