1222003212 has 24 divisors (see below), whose sum is σ = 2852356416. Its totient is φ = 407189328.

The previous prime is 1222003207. The next prime is 1222003213. The reversal of 1222003212 is 2123002221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1222003191 and 1222003200.

It is not an unprimeable number, because it can be changed into a prime (1222003213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20203 + ... + 53405.

It is an arithmetic number, because the mean of its divisors is an integer number (118848184).

Almost surely, 2^1222003212 is an apocalyptic number.

1222003212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222003212 is an abundant number, since it is smaller than the sum of its proper divisors (1630353204).

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

1222003212 is a wasteful number, since it uses less digits than its factorization.

1222003212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36277 (or 36275 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1222003212 is about 34957.1625278712. The cubic root of 1222003212 is about 1069.1142441104.

Adding to 1222003212 its reverse (2123002221), we get a palindrome (3345005433).

Subtracting 1222003212 from its reverse (2123002221), we obtain a palindrome (900999009).

The spelling of 1222003212 in words is "one billion, two hundred twenty-two million, three thousand, two hundred twelve".