221310332212 has 24 divisors (see below), whose sum is σ = 410114940480. Its totient is φ = 104135902080.

The previous prime is 221310332197. The next prime is 221310332273. The reversal of 221310332212 is 212233013122.

It is a congruent number.

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, 569839 + ... + 875977.

It is an arithmetic number, because the mean of its divisors is an integer number (17088122520).

Almost surely, 2^221310332212 is an apocalyptic number.

It is an amenable number.

221310332212 is a deficient number, since it is larger than the sum of its proper divisors (188804608268).

221310332212 is a wasteful number, since it uses less digits than its factorization.

221310332212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316791 (or 316789 counting only the distinct ones).

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

Adding to 221310332212 its reverse (212233013122), we get a palindrome (433543345334).

The spelling of 221310332212 in words is "two hundred twenty-one billion, three hundred ten million, three hundred thirty-two thousand, two hundred twelve".