221113323212 has 48 divisors (see below), whose sum is σ = 394239238848. Its totient is φ = 108495728640.

The previous prime is 221113323169. The next prime is 221113323247. The reversal of 221113323212 is 212323311122.

It is a super-2 number, since 2×221113323212² (a number of 23 digits) contains 22 as substring.

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, 31733753 + ... + 31740719.

It is an arithmetic number, because the mean of its divisors is an integer number (8213317476).

Almost surely, 2^221113323212 is an apocalyptic number.

It is an amenable number.

221113323212 is a deficient number, since it is larger than the sum of its proper divisors (173125915636).

221113323212 is a wasteful number, since it uses less digits than its factorization.

221113323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7746 (or 7744 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 221113323212 its reverse (212323311122), we get a palindrome (433436634334).

The spelling of 221113323212 in words is "two hundred twenty-one billion, one hundred thirteen million, three hundred twenty-three thousand, two hundred twelve".