221112210212 has 24 divisors (see below), whose sum is σ = 407429934240. Its totient is φ = 104707028160.

The previous prime is 221112210203. The next prime is 221112210227. The reversal of 221112210212 is 212012211122.

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, 156089 + ... + 683072.

It is an arithmetic number, because the mean of its divisors is an integer number (16976247260).

Almost surely, 2^221112210212 is an apocalyptic number.

It is an amenable number.

221112210212 is a deficient number, since it is larger than the sum of its proper divisors (186317724028).

221112210212 is a wasteful number, since it uses less digits than its factorization.

221112210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842651 (or 842649 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221112210212 its reverse (212012211122), we get a palindrome (433124421334).

The spelling of 221112210212 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, two hundred twelve".