2221610000 has 50 divisors (see below), whose sum is σ = 5378764182. Its totient is φ = 888640000.

The previous prime is 2221609933. The next prime is 2221610101. The reversal of 2221610000 is 161222.

It can be written as a sum of positive squares in 5 ways, for example, as 814759936 + 1406850064 = 28544^2 + 37508^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 101081 + ... + 121080.

Almost surely, 2^2221610000 is an apocalyptic number.

2221610000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221610000 is an abundant number, since it is smaller than the sum of its proper divisors (3157154182).

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

2221610000 is an equidigital number, since it uses as much as digits as its factorization.

2221610000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222189 (or 222168 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2221610000 is about 47133.9580345211. The cubic root of 2221610000 is about 1304.8360309344.

Adding to 2221610000 its reverse (161222), we get a palindrome (2221771222).

The spelling of 2221610000 in words is "two billion, two hundred twenty-one million, six hundred ten thousand".