2221012210 has 16 divisors (see below), whose sum is σ = 4000599576. Its totient is φ = 887787648.

The previous prime is 2221012169. The next prime is 2221012217. The reversal of 2221012210 is 122101222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2220954129 + 58081 = 47127^2 + 241^2 .

It is not an unprimeable number, because it can be changed into a prime (2221012217) 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, 61899 + ... + 90958.

Almost surely, 2^2221012210 is an apocalyptic number.

2221012210 is a deficient number, since it is larger than the sum of its proper divisors (1779587366).

2221012210 is a wasteful number, since it uses less digits than its factorization.

2221012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154317.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2221012210 is about 47127.6162138507. The cubic root of 2221012210 is about 1304.7189855029.

Adding to 2221012210 its reverse (122101222), we get a palindrome (2343113432).

It can be divided in two parts, 2221012 and 210, that added together give a palindrome (2221222).

The spelling of 2221012210 in words is "two billion, two hundred twenty-one million, twelve thousand, two hundred ten".