221303142212 has 24 divisors (see below), whose sum is σ = 389960524800. Its totient is φ = 109886157920.

The previous prime is 221303142199. The next prime is 221303142223. The reversal of 221303142212 is 212241303122.

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, 3046013 + ... + 3117819.

It is an arithmetic number, because the mean of its divisors is an integer number (16248355200).

Almost surely, 2^221303142212 is an apocalyptic number.

It is an amenable number.

221303142212 is a deficient number, since it is larger than the sum of its proper divisors (168657382588).

221303142212 is a wasteful number, since it uses less digits than its factorization.

221303142212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77131 (or 77129 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221303142212 its reverse (212241303122), we get a palindrome (433544445334).

The spelling of 221303142212 in words is "two hundred twenty-one billion, three hundred three million, one hundred forty-two thousand, two hundred twelve".