2216721468 has 48 divisors (see below), whose sum is σ = 5581366560. Its totient is φ = 680703744.

The previous prime is 2216721413. The next prime is 2216721473. The reversal of 2216721468 is 8641276122.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65446 + ... + 93362.

It is an arithmetic number, because the mean of its divisors is an integer number (116278470).

Almost surely, 2^2216721468 is an apocalyptic number.

It is an amenable number.

2216721468 is an abundant number, since it is smaller than the sum of its proper divisors (3364645092).

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

2216721468 is a wasteful number, since it uses less digits than its factorization.

2216721468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28446 (or 28444 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 2216721468 is about 47082.0716196728. The cubic root of 2216721468 is about 1303.8782545013.

The spelling of 2216721468 in words is "two billion, two hundred sixteen million, seven hundred twenty-one thousand, four hundred sixty-eight".