212001221210 has 16 divisors (see below), whose sum is σ = 381607704576. Its totient is φ = 84799264848.

The previous prime is 212001221189. The next prime is 212001221239. The reversal of 212001221210 is 12122100212.

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, 961127 + ... + 1160933.

It is an arithmetic number, because the mean of its divisors is an integer number (23850481536).

Almost surely, 2^212001221210 is an apocalyptic number.

212001221210 is a deficient number, since it is larger than the sum of its proper divisors (169606483366).

212001221210 is a wasteful number, since it uses less digits than its factorization.

212001221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305917.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212001221210 its reverse (12122100212), we get a palindrome (224123321422).

The spelling of 212001221210 in words is "two hundred twelve billion, one million, two hundred twenty-one thousand, two hundred ten".