2222221111110 has 384 divisors, whose sum is σ = 7967247934464. Its totient is φ = 414719585280.

The previous prime is 2222221111057. The next prime is 2222221111241. The reversal of 2222221111110 is 111111222222.

2222221111110 is a `hidden beast` number, since 2 + 222 + 221 + 111 + 110 = 666.

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

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2999997 + ... + 3666663.

It is an arithmetic number, because the mean of its divisors is an integer number (20748041496).

Almost surely, 2^{2222221111110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2222221111110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3983623967232).

2222221111110 is an abundant number, since it is smaller than the sum of its proper divisors (5745026823354).

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

2222221111110 is a wasteful number, since it uses less digits than its factorization.

2222221111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666748 (or 666745 counting only the distinct ones).

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

Adding to 2222221111110 its reverse (111111222222), we get a palindrome (2333332333332).

The spelling of 2222221111110 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred ten".