212221030412 has 24 divisors (see below), whose sum is σ = 374891630400. Its totient is φ = 105109315920.

The previous prime is 212221030397. The next prime is 212221030447. The reversal of 212221030412 is 214030122212.

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, 8418587 + ... + 8443757.

It is an arithmetic number, because the mean of its divisors is an integer number (15620484600).

Almost surely, 2^212221030412 is an apocalyptic number.

It is an amenable number.

212221030412 is a deficient number, since it is larger than the sum of its proper divisors (162670599988).

212221030412 is a wasteful number, since it uses less digits than its factorization.

212221030412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44981 (or 44979 counting only the distinct ones).

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

Adding to 212221030412 its reverse (214030122212), we get a palindrome (426251152624).

The spelling of 212221030412 in words is "two hundred twelve billion, two hundred twenty-one million, thirty thousand, four hundred twelve".