2211221222218 has 16 divisors (see below), whose sum is σ = 3349641312576. Its totient is φ = 1094678010720.

The previous prime is 2211221222131. The next prime is 2211221222239. The reversal of 2211221222218 is 8122221221122.

It is a happy 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, 169030 + ... + 2109742.

It is an arithmetic number, because the mean of its divisors is an integer number (209352582036).

Almost surely, 2^{2211221222218} is an apocalyptic number.

2211221222218 is a deficient number, since it is larger than the sum of its proper divisors (1138420090358).

2211221222218 is a wasteful number, since it uses less digits than its factorization.

2211221222218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946349.

The product of its digits is 2048, while the sum is 28.

The spelling of 2211221222218 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred eighteen".