2221526416 has 10 divisors (see below), whose sum is σ = 4304207462. Its totient is φ = 1110763200.

The previous prime is 2221526413. The next prime is 2221526423. The reversal of 2221526416 is 6146251222.

It can be written as a sum of positive squares in only one way, i.e., 1815100816 + 406425600 = 42604^2 + 20160^2 .

It is not an unprimeable number, because it can be changed into a prime (2221526413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69422685 + ... + 69422716.

Almost surely, 2^2221526416 is an apocalyptic number.

It is an amenable number.

2221526416 is a deficient number, since it is larger than the sum of its proper divisors (2082681046).

2221526416 is a wasteful number, since it uses less digits than its factorization.

2221526416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138845409 (or 138845403 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 2221526416 is about 47133.0713618368. The cubic root of 2221526416 is about 1304.8196667087.

Adding to 2221526416 its reverse (6146251222), we get a palindrome (8367777638).

The spelling of 2221526416 in words is "two billion, two hundred twenty-one million, five hundred twenty-six thousand, four hundred sixteen".