212221221230 has 16 divisors (see below), whose sum is σ = 382006470384. Its totient is φ = 84886650240.

The previous prime is 212221221151. The next prime is 212221221253. The reversal of 212221221230 is 32122122212.

It is a congruent number.

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, 317069 + ... + 724551.

It is an arithmetic number, because the mean of its divisors is an integer number (23875404399).

Almost surely, 2^212221221230 is an apocalyptic number.

212221221230 is a deficient number, since it is larger than the sum of its proper divisors (169785249154).

212221221230 is a wasteful number, since it uses less digits than its factorization.

212221221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459571.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212221221230 its reverse (32122122212), we get a palindrome (244343343442).

The spelling of 212221221230 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred thirty".