221210101210 has 64 divisors (see below), whose sum is σ = 456125624064. Its totient is φ = 75666240000.

The previous prime is 221210101199. The next prime is 221210101213. The reversal of 221210101210 is 12101012122.

It is not an unprimeable number, because it can be changed into a prime (221210101213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68042085 + ... + 68045335.

It is an arithmetic number, because the mean of its divisors is an integer number (7126962876).

Almost surely, 2^221210101210 is an apocalyptic number.

221210101210 is an abundant number, since it is smaller than the sum of its proper divisors (234915522854).

221210101210 is a wasteful number, since it uses less digits than its factorization.

221210101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221210101210 its reverse (12101012122), we get a palindrome (233311113332).

It can be divided in two parts, 2 and 21210101210, that added together give a palindrome (21210101212).

The spelling of 221210101210 in words is "two hundred twenty-one billion, two hundred ten million, one hundred one thousand, two hundred ten".