1200021112 has 16 divisors (see below), whose sum is σ = 2270683800. Its totient is φ = 594505440.

The previous prime is 1200021107. The next prime is 1200021149. The reversal of 1200021112 is 2111200021.

It is a super-3 number, since 3×1200021112³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687214 + ... + 688957.

Almost surely, 2^1200021112 is an apocalyptic number.

It is an amenable number.

1200021112 is a deficient number, since it is larger than the sum of its proper divisors (1070662688).

1200021112 is a wasteful number, since it uses less digits than its factorization.

1200021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376286 (or 1376282 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1200021112 is about 34641.3208755094. The cubic root of 1200021112 is about 1062.6648010482.

Adding to 1200021112 its reverse (2111200021), we get a palindrome (3311221133).

The spelling of 1200021112 in words is "one billion, two hundred million, twenty-one thousand, one hundred twelve".