2221205016 has 32 divisors (see below), whose sum is σ = 5703096240. Its totient is φ = 720390528.

The previous prime is 2221204987. The next prime is 2221205027. The reversal of 2221205016 is 6105021222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2221204983 and 2221205001.

It is a congruent number.

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, 1249791 + ... + 1251566.

Almost surely, 2^2221205016 is an apocalyptic number.

It is an amenable number.

2221205016 is an abundant number, since it is smaller than the sum of its proper divisors (3481891224).

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

2221205016 is a wasteful number, since it uses less digits than its factorization.

2221205016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501403 (or 2501399 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2221205016 is about 47129.6617428982. The cubic root of 2221205016 is about 1304.7567386151.

Adding to 2221205016 its reverse (6105021222), we get a palindrome (8326226238).

The spelling of 2221205016 in words is "two billion, two hundred twenty-one million, two hundred five thousand, sixteen".