212221321230 has 32 divisors (see below), whose sum is σ = 511916622624. Its totient is φ = 56305079936.

The previous prime is 212221321223. The next prime is 212221321253. The reversal of 212221321230 is 32123122212.

It is a junction number, because it is equal to n+sod(n) for n = 212221321197 and 212221321206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17948517 + ... + 17960336.

It is an arithmetic number, because the mean of its divisors is an integer number (15997394457).

Almost surely, 2^212221321230 is an apocalyptic number.

212221321230 is an abundant number, since it is smaller than the sum of its proper divisors (299695301394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212221321230 is a wasteful number, since it uses less digits than its factorization.

212221321230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35909060.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 212221321230 its reverse (32123122212), we get a palindrome (244344443442).

The spelling of 212221321230 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred thirty".