221422121264005 has 8 divisors (see below), whose sum is σ = 265711540601592. Its totient is φ = 177134366954688.

The previous prime is 221422121263969. The next prime is 221422121264009. The reversal of 221422121264005 is 500462121224122.

It can be written as a sum of positive squares in 4 ways, for example, as 88422596282241 + 132999524981764 = 9403329^2 + 11532542^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 221422121264005 - 2⁹ = 221422121263493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422121264009) 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, 415964482 + ... + 416496451.

It is an arithmetic number, because the mean of its divisors is an integer number (33213942575199).

Almost surely, 2^{221422121264005} is an apocalyptic number.

It is an amenable number.

221422121264005 is a deficient number, since it is larger than the sum of its proper divisors (44289419337587).

221422121264005 is an equidigital number, since it uses as much as digits as its factorization.

221422121264005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832514135.

The product of its (nonzero) digits is 30720, while the sum is 34.

Adding to 221422121264005 its reverse (500462121224122), we get a palindrome (721884242488127).

The spelling of 221422121264005 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one hundred twenty-one million, two hundred sixty-four thousand, five".