2211312320 has 56 divisors (see below), whose sum is σ = 6017934624. Its totient is φ = 758163456.

The previous prime is 2211312317. The next prime is 2211312331. The reversal of 2211312320 is 232131122.

It is a tau number, because it is divible by the number of its divisors (56).

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, 491357 + ... + 495836.

Almost surely, 2^2211312320 is an apocalyptic number.

2211312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211312320 is an abundant number, since it is smaller than the sum of its proper divisors (3806622304).

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

2211312320 is an equidigital number, since it uses as much as digits as its factorization.

2211312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987217 (or 987207 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2211312320 is about 47024.5927148763. The cubic root of 2211312320 is about 1302.8168348857.

Adding to 2211312320 its reverse (232131122), we get a palindrome (2443443442).

The spelling of 2211312320 in words is "two billion, two hundred eleven million, three hundred twelve thousand, three hundred twenty".