1220011112 has 16 divisors (see below), whose sum is σ = 2291919300. Its totient is φ = 608832640.

The previous prime is 1220011097. The next prime is 1220011123. The reversal of 1220011112 is 2111100221.

It can be written as a sum of positive squares in 2 ways, for example, as 1009587076 + 210424036 = 31774^2 + 14506^2 .

It is a super-2 number, since 2×1220011112² = 2976854226806953088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220011093 and 1220011102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142187 + ... + 150522.

Almost surely, 2^1220011112 is an apocalyptic number.

It is an amenable number.

1220011112 is a deficient number, since it is larger than the sum of its proper divisors (1071908188).

1220011112 is a wasteful number, since it uses less digits than its factorization.

1220011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293236 (or 293232 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1220011112 is about 34928.6574606010. The cubic root of 1220011112 is about 1068.5329742654.

Adding to 1220011112 its reverse (2111100221), we get a palindrome (3331111333).

The spelling of 1220011112 in words is "one billion, two hundred twenty million, eleven thousand, one hundred twelve".