221534456107306 has 16 divisors (see below), whose sum is σ = 361853013607200. Its totient is φ = 101318843809008.

The previous prime is 221534456107247. The next prime is 221534456107309. The reversal of 221534456107306 is 603701654435122.

It is a self number, because there is not a number n which added to its sum of digits gives 221534456107306.

It is not an unprimeable number, because it can be changed into a prime (221534456107309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100514724900 + ... + 100514727103.

It is an arithmetic number, because the mean of its divisors is an integer number (22615813350450).

Almost surely, 2^{221534456107306} is an apocalyptic number.

221534456107306 is a deficient number, since it is larger than the sum of its proper divisors (140318557499894).

221534456107306 is a wasteful number, since it uses less digits than its factorization.

221534456107306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201029452053.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 221534456107306 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-six million, one hundred seven thousand, three hundred six".