221123330212 has 24 divisors (see below), whose sum is σ = 399472480512. Its totient is φ = 106988762400.

The previous prime is 221123330201. The next prime is 221123330231. The reversal of 221123330212 is 212033321122.

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, 2532678 + ... + 2618530.

It is an arithmetic number, because the mean of its divisors is an integer number (16644686688).

Almost surely, 2^221123330212 is an apocalyptic number.

It is an amenable number.

221123330212 is a deficient number, since it is larger than the sum of its proper divisors (178349150300).

221123330212 is a wasteful number, since it uses less digits than its factorization.

221123330212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106659 (or 106657 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221123330212 its reverse (212033321122), we get a palindrome (433156651334).

The spelling of 221123330212 in words is "two hundred twenty-one billion, one hundred twenty-three million, three hundred thirty thousand, two hundred twelve".