221422005013723 has 4 divisors (see below), whose sum is σ = 221422523047488. Its totient is φ = 221421486979960.

The previous prime is 221422005013717. The next prime is 221422005013747. The reversal of 221422005013723 is 327310500224122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221422005013723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221422005013123) 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, 258375211 + ... + 259230772.

It is an arithmetic number, because the mean of its divisors is an integer number (55355630761872).

Almost surely, 2^{221422005013723} is an apocalyptic number.

221422005013723 is a deficient number, since it is larger than the sum of its proper divisors (518033765).

221422005013723 is an equidigital number, since it uses as much as digits as its factorization.

221422005013723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518033764.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 221422005013723 its reverse (327310500224122), we get a palindrome (548732505237845).

The spelling of 221422005013723 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, five million, thirteen thousand, seven hundred twenty-three".