1220112118 has 32 divisors (see below), whose sum is σ = 1902815712. Its totient is φ = 586464000.

The previous prime is 1220112109. The next prime is 1220112121. The reversal of 1220112118 is 8112110221.

It is a junction number, because it is equal to n+sod(n) for n = 1220112095 and 1220112104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022130 + ... + 1023322.

It is an arithmetic number, because the mean of its divisors is an integer number (59462991).

Almost surely, 2^1220112118 is an apocalyptic number.

1220112118 is a deficient number, since it is larger than the sum of its proper divisors (682703594).

1220112118 is a wasteful number, since it uses less digits than its factorization.

1220112118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 1220112118 is about 34930.1033207748. The cubic root of 1220112118 is about 1068.5624617736.

Adding to 1220112118 its reverse (8112110221), we get a palindrome (9332222339).

The spelling of 1220112118 in words is "one billion, two hundred twenty million, one hundred twelve thousand, one hundred eighteen".