212221132210 has 16 divisors (see below), whose sum is σ = 383711037696. Its totient is φ = 84507786288.

The previous prime is 212221132141. The next prime is 212221132261. The reversal of 212221132210 is 12231122212.

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, 47580984 + ... + 47585443.

It is an arithmetic number, because the mean of its divisors is an integer number (23981939856).

Almost surely, 2^212221132210 is an apocalyptic number.

212221132210 is a deficient number, since it is larger than the sum of its proper divisors (171489905486).

212221132210 is a wasteful number, since it uses less digits than its factorization.

212221132210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95166657.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212221132210 its reverse (12231122212), we get a palindrome (224452254422).

The spelling of 212221132210 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred thirty-two thousand, two hundred ten".