221340024121312 has 24 divisors (see below), whose sum is σ = 435782531695392. Its totient is φ = 110665095436800.

The previous prime is 221340024121301. The next prime is 221340024121313. The reversal of 221340024121312 is 213121420043122.

221340024121312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221340024121313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152912889 + ... + 154353592.

It is an arithmetic number, because the mean of its divisors is an integer number (18157605487308).

Almost surely, 2^{221340024121312} is an apocalyptic number.

It is an amenable number.

221340024121312 is a deficient number, since it is larger than the sum of its proper divisors (214442507574080).

221340024121312 is a wasteful number, since it uses less digits than its factorization.

221340024121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307289002 (or 307288994 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 221340024121312 its reverse (213121420043122), we get a palindrome (434461444164434).

The spelling of 221340024121312 in words is "two hundred twenty-one trillion, three hundred forty billion, twenty-four million, one hundred twenty-one thousand, three hundred twelve".