221310103312 has 20 divisors (see below), whose sum is σ = 428834073820. Its totient is φ = 110643245568.

The previous prime is 221310103271. The next prime is 221310103351. The reversal of 221310103312 is 213301013122.

It can be written as a sum of positive squares in 2 ways, for example, as 135662568976 + 85647534336 = 368324^2 + 292656^2 .

It is a super-2 number, since 2×221310103312² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221310103312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582237 + ... + 884092.

It is an arithmetic number, because the mean of its divisors is an integer number (21441703691).

Almost surely, 2^221310103312 is an apocalyptic number.

It is an amenable number.

221310103312 is a deficient number, since it is larger than the sum of its proper divisors (207523970508).

221310103312 is a wasteful number, since it uses less digits than its factorization.

221310103312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475770 (or 1475764 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221310103312 its reverse (213301013122), we get a palindrome (434611116434).

The spelling of 221310103312 in words is "two hundred twenty-one billion, three hundred ten million, one hundred three thousand, three hundred twelve".