100221220210 has 32 divisors (see below), whose sum is σ = 180916010352. Its totient is φ = 39973543680.

The previous prime is 100221220201. The next prime is 100221220237. The reversal of 100221220210 is 12022122001.

It is a happy number.

100221220210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 569251881 + 99651968329 = 23859^2 + 315677^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7355364 + ... + 7368976.

Almost surely, 2^100221220210 is an apocalyptic number.

100221220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100221220210 is a deficient number, since it is larger than the sum of its proper divisors (80694790142).

100221220210 is a wasteful number, since it uses less digits than its factorization.

100221220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15678.

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

Adding to 100221220210 its reverse (12022122001), we get a palindrome (112243342211).

The spelling of 100221220210 in words is "one hundred billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".