1220111122 has 16 divisors (see below), whose sum is σ = 1854189792. Its totient is φ = 602063680.

The previous prime is 1220111119. The next prime is 1220111141. The reversal of 1220111122 is 2211110221.

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, 177738 + ... + 184474.

It is an arithmetic number, because the mean of its divisors is an integer number (115886862).

Almost surely, 2^1220111122 is an apocalyptic number.

1220111122 is a deficient number, since it is larger than the sum of its proper divisors (634078670).

1220111122 is a wasteful number, since it uses less digits than its factorization.

1220111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7913.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1220111122 is about 34930.0890637284. The cubic root of 1220111122 is about 1068.5621710111.

Adding to 1220111122 its reverse (2211110221), we get a palindrome (3431221343).

Subtracting 1220111122 from its reverse (2211110221), we obtain a palindrome (990999099).

The spelling of 1220111122 in words is "one billion, two hundred twenty million, one hundred eleven thousand, one hundred twenty-two".