1120021212 has 24 divisors (see below), whose sum is σ = 2642749200. Its totient is φ = 369145216.

The previous prime is 1120021211. The next prime is 1120021247. The reversal of 1120021212 is 2121200211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523287 + ... + 525422.

It is an arithmetic number, because the mean of its divisors is an integer number (110114550).

Almost surely, 2^1120021212 is an apocalyptic number.

1120021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1120021212 is an abundant number, since it is smaller than the sum of its proper divisors (1522727988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1120021212 is a wasteful number, since it uses less digits than its factorization.

1120021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048805 (or 1048803 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1120021212 is about 33466.7179747283. The cubic root of 1120021212 is about 1038.5053764708.

Adding to 1120021212 its reverse (2121200211), we get a palindrome (3241221423).

The spelling of 1120021212 in words is "one billion, one hundred twenty million, twenty-one thousand, two hundred twelve".