21222203322301 has 4 divisors (see below), whose sum is σ = 21229191209212. Its totient is φ = 21215215435392.

The previous prime is 21222203322263. The next prime is 21222203322319. The reversal of 21222203322301 is 10322330222212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19875315414276 + 1346887908025 = 4458174^2 + 1160555^2 .

It is a cyclic number.

It is not a de Polignac number, because 21222203322301 - 2⁴¹ = 19023180066749 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 (21222203323301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3493938900 + ... + 3493944973.

It is an arithmetic number, because the mean of its divisors is an integer number (5307297802303).

Almost surely, 2^{21222203322301} is an apocalyptic number.

It is an amenable number.

21222203322301 is a deficient number, since it is larger than the sum of its proper divisors (6987886911).

21222203322301 is an equidigital number, since it uses as much as digits as its factorization.

21222203322301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987886910.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21222203322301 its reverse (10322330222212), we get a palindrome (31544533544513).

The spelling of 21222203322301 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred three million, three hundred twenty-two thousand, three hundred one".