2216621346 has 16 divisors (see below), whose sum is σ = 4477137408. Its totient is φ = 731558000.

The previous prime is 2216621321. The next prime is 2216621369. The reversal of 2216621346 is 6431266122.

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, 1828290 + ... + 1829501.

It is an arithmetic number, because the mean of its divisors is an integer number (279821088).

Almost surely, 2^2216621346 is an apocalyptic number.

2216621346 is an abundant number, since it is smaller than the sum of its proper divisors (2260516062).

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

2216621346 is a wasteful number, since it uses less digits than its factorization.

2216621346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657897.

The product of its digits is 20736, while the sum is 33.

The square root of 2216621346 is about 47081.0083366956. The cubic root of 2216621346 is about 1303.8586235785.

Adding to 2216621346 its reverse (6431266122), we get a palindrome (8647887468).

The spelling of 2216621346 in words is "two billion, two hundred sixteen million, six hundred twenty-one thousand, three hundred forty-six".