22422401312221 has 8 divisors (see below), whose sum is σ = 22565451104504. Its totient is φ = 22279354456320.

The previous prime is 22422401312219. The next prime is 22422401312273. The reversal of 22422401312221 is 12221310422422.

It can be written as a sum of positive squares in 4 ways, for example, as 1936467064900 + 20485934247321 = 1391570^2 + 4526139^2 .

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 22422401312221 - 2¹ = 22422401312219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22422401312221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22422401322221) 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, 15765841 + ... + 17129113.

It is an arithmetic number, because the mean of its divisors is an integer number (2820681388063).

Almost surely, 2^{22422401312221} is an apocalyptic number.

It is an amenable number.

22422401312221 is a deficient number, since it is larger than the sum of its proper divisors (143049792283).

22422401312221 is a wasteful number, since it uses less digits than its factorization.

22422401312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468191.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 22422401312221 its reverse (12221310422422), we get a palindrome (34643711734643).

The spelling of 22422401312221 in words is "twenty-two trillion, four hundred twenty-two billion, four hundred one million, three hundred twelve thousand, two hundred twenty-one".