2221215344 has 40 divisors (see below), whose sum is σ = 4435830672. Its totient is φ = 1076820480.

The previous prime is 2221215341. The next prime is 2221215377. The reversal of 2221215344 is 4435121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221215341) 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, 96542 + ... + 117314.

Almost surely, 2^2221215344 is an apocalyptic number.

It is an amenable number.

2221215344 is a deficient number, since it is larger than the sum of its proper divisors (2214615328).

2221215344 is a wasteful number, since it uses less digits than its factorization.

2221215344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20985 (or 20979 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 2221215344 is about 47129.7713128337. The cubic root of 2221215344 is about 1304.7587608668.

Adding to 2221215344 its reverse (4435121222), we get a palindrome (6656336566).

The spelling of 2221215344 in words is "two billion, two hundred twenty-one million, two hundred fifteen thousand, three hundred forty-four".