221223302212 has 24 divisors (see below), whose sum is σ = 440697805632. Its totient is φ = 96184044000.

The previous prime is 221223302207. The next prime is 221223302227. The reversal of 221223302212 is 212203322122.

221223302212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109299039 + ... + 109301062.

It is an arithmetic number, because the mean of its divisors is an integer number (18362408568).

Almost surely, 2^221223302212 is an apocalyptic number.

221223302212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221223302212 is a deficient number, since it is larger than the sum of its proper divisors (219474503420).

221223302212 is a wasteful number, since it uses less digits than its factorization.

221223302212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218600139 (or 218600137 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 221223302212 its reverse (212203322122), we get a palindrome (433426624334).

The spelling of 221223302212 in words is "two hundred twenty-one billion, two hundred twenty-three million, three hundred two thousand, two hundred twelve".