2221120312 has 32 divisors (see below), whose sum is σ = 4459147200. Its totient is φ = 1033483264.

The previous prime is 2221120301. The next prime is 2221120393. The reversal of 2221120312 is 2130211222.

It is a happy number.

It is a congruent number.

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, 79648 + ... + 103855.

It is an arithmetic number, because the mean of its divisors is an integer number (139348350).

Almost surely, 2^2221120312 is an apocalyptic number.

It is an amenable number.

2221120312 is an abundant number, since it is smaller than the sum of its proper divisors (2238026888).

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

2221120312 is a wasteful number, since it uses less digits than its factorization.

2221120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183615 (or 183611 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2221120312 is about 47128.7631070454. The cubic root of 2221120312 is about 1304.7401530953.

Adding to 2221120312 its reverse (2130211222), we get a palindrome (4351331534).

The spelling of 2221120312 in words is "two billion, two hundred twenty-one million, one hundred twenty thousand, three hundred twelve".