1220445112 has 8 divisors (see below), whose sum is σ = 2288334600. Its totient is φ = 610222552.

The previous prime is 1220445097. The next prime is 1220445119. The reversal of 1220445112 is 2115440221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220445119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76277812 + ... + 76277827.

It is an arithmetic number, because the mean of its divisors is an integer number (286041825).

Almost surely, 2^1220445112 is an apocalyptic number.

It is an amenable number.

1220445112 is a deficient number, since it is larger than the sum of its proper divisors (1067889488).

1220445112 is a wasteful number, since it uses less digits than its factorization.

1220445112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152555645 (or 152555641 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1220445112 is about 34934.8695718189. The cubic root of 1220445112 is about 1068.6596639125.

Adding to 1220445112 its reverse (2115440221), we get a palindrome (3335885333).

The spelling of 1220445112 in words is "one billion, two hundred twenty million, four hundred forty-five thousand, one hundred twelve".