221101001210 has 16 divisors (see below), whose sum is σ = 397987581600. Its totient is φ = 88439116176.

The previous prime is 221101001203. The next prime is 221101001237. The reversal of 221101001210 is 12100101122.

221101001210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221101001191 and 221101001200.

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, 889661 + ... + 1110719.

It is an arithmetic number, because the mean of its divisors is an integer number (24874223850).

Almost surely, 2^221101001210 is an apocalyptic number.

221101001210 is a deficient number, since it is larger than the sum of its proper divisors (176886580390).

221101001210 is a wasteful number, since it uses less digits than its factorization.

221101001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321085.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221101001210 its reverse (12100101122), we get a palindrome (233201102332).

The spelling of 221101001210 in words is "two hundred twenty-one billion, one hundred one million, one thousand, two hundred ten".