221310030202312 has 8 divisors (see below), whose sum is σ = 414956306629350. Its totient is φ = 110655015101152.

The previous prime is 221310030202271. The next prime is 221310030202351. The reversal of 221310030202312 is 213202030013122.

It can be written as a sum of positive squares in only one way, i.e., 212556396710596 + 8753633491716 = 14579314^2 + 2958654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13831876887637 + ... + 13831876887652.

Almost surely, 2^{221310030202312} is an apocalyptic number.

It is an amenable number.

221310030202312 is a deficient number, since it is larger than the sum of its proper divisors (193646276427038).

221310030202312 is a wasteful number, since it uses less digits than its factorization.

221310030202312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27663753775295 (or 27663753775291 counting only the distinct ones).

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

Adding to 221310030202312 its reverse (213202030013122), we get a palindrome (434512060215434).

The spelling of 221310030202312 in words is "two hundred twenty-one trillion, three hundred ten billion, thirty million, two hundred two thousand, three hundred twelve".