1220323112 has 32 divisors (see below), whose sum is σ = 2332800000. Its totient is φ = 598348608.

The previous prime is 1220323067. The next prime is 1220323129. The reversal of 1220323112 is 2113230221.

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, 87689 + ... + 100647.

It is an arithmetic number, because the mean of its divisors is an integer number (72900000).

Almost surely, 2^1220323112 is an apocalyptic number.

It is an amenable number.

1220323112 is a deficient number, since it is larger than the sum of its proper divisors (1112476888).

1220323112 is a wasteful number, since it uses less digits than its factorization.

1220323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13193 (or 13189 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1220323112 is about 34933.1234217612. The cubic root of 1220323112 is about 1068.6240537289.

Adding to 1220323112 its reverse (2113230221), we get a palindrome (3333553333).

The spelling of 1220323112 in words is "one billion, two hundred twenty million, three hundred twenty-three thousand, one hundred twelve".