221422001223765 has 8 divisors (see below), whose sum is σ = 354275201958048. Its totient is φ = 118091733986000.

The previous prime is 221422001223751. The next prime is 221422001223791. The reversal of 221422001223765 is 567322100224122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221422001223765 - 2⁶ = 221422001223701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7380733374111 + ... + 7380733374140.

It is an arithmetic number, because the mean of its divisors is an integer number (44284400244756).

Almost surely, 2^{221422001223765} is an apocalyptic number.

It is an amenable number.

221422001223765 is a deficient number, since it is larger than the sum of its proper divisors (132853200734283).

221422001223765 is a wasteful number, since it uses less digits than its factorization.

221422001223765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14761466748259.

The product of its (nonzero) digits is 161280, while the sum is 39.

Adding to 221422001223765 its reverse (567322100224122), we get a palindrome (788744101447887).

The spelling of 221422001223765 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one million, two hundred twenty-three thousand, seven hundred sixty-five".