221422001223764 has 48 divisors (see below), whose sum is σ = 441097891799040. Its totient is φ = 96269505356640.

The previous prime is 221422001223751. The next prime is 221422001223791. The reversal of 221422001223764 is 467322100224122.

221422001223764 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109466717 + ... + 111471099.

It is an arithmetic number, because the mean of its divisors is an integer number (9189539412480).

Almost surely, 2^{221422001223764} is an apocalyptic number.

It is an amenable number.

221422001223764 is a deficient number, since it is larger than the sum of its proper divisors (219675890575276).

221422001223764 is a wasteful number, since it uses less digits than its factorization.

221422001223764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113580 (or 2113578 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

Adding to 221422001223764 its reverse (467322100224122), we get a palindrome (688744101447886).

The spelling of 221422001223764 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one million, two hundred twenty-three thousand, seven hundred sixty-four".