212000010221 has 8 divisors (see below), whose sum is σ = 213215587200. Its totient is φ = 210784780480.

The previous prime is 212000010139. The next prime is 212000010241. The reversal of 212000010221 is 122010000212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212000010221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000010241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191500 + ... + 1357818.

It is an arithmetic number, because the mean of its divisors is an integer number (26651948400).

Almost surely, 2^212000010221 is an apocalyptic number.

It is an amenable number.

212000010221 is a deficient number, since it is larger than the sum of its proper divisors (1215576979).

212000010221 is a wasteful number, since it uses less digits than its factorization.

212000010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173619.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212000010221 its reverse (122010000212), we get a palindrome (334010010433).

The spelling of 212000010221 in words is "two hundred twelve billion, ten thousand, two hundred twenty-one".