221668703395 has 16 divisors (see below), whose sum is σ = 266281849728. Its totient is φ = 177148794240.

The previous prime is 221668703393. The next prime is 221668703419. The reversal of 221668703395 is 593307866122.

It is not a de Polignac number, because 221668703395 - 2¹ = 221668703393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221668703393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31677037 + ... + 31684033.

It is an arithmetic number, because the mean of its divisors is an integer number (16642615608).

Almost surely, 2^221668703395 is an apocalyptic number.

221668703395 is a deficient number, since it is larger than the sum of its proper divisors (44613146333).

221668703395 is a wasteful number, since it uses less digits than its factorization.

221668703395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12750.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 221668703395 in words is "two hundred twenty-one billion, six hundred sixty-eight million, seven hundred three thousand, three hundred ninety-five".