22031313302221 has 4 divisors (see below), whose sum is σ = 23327272908252. Its totient is φ = 20735353696192.

The previous prime is 22031313302177. The next prime is 22031313302231. The reversal of 22031313302221 is 12220331313022.

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 6928871675625 + 15102441626596 = 2632275^2 + 3886186^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031313302221 - 2¹¹ = 22031313300173 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 (22031313302231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647979802990 + ... + 647979803023.

It is an arithmetic number, because the mean of its divisors is an integer number (5831818227063).

Almost surely, 2^{22031313302221} is an apocalyptic number.

It is an amenable number.

22031313302221 is a deficient number, since it is larger than the sum of its proper divisors (1295959606031).

22031313302221 is a wasteful number, since it uses less digits than its factorization.

22031313302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295959606030.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 22031313302221 its reverse (12220331313022), we get a palindrome (34251644615243).

The spelling of 22031313302221 in words is "twenty-two trillion, thirty-one billion, three hundred thirteen million, three hundred two thousand, two hundred twenty-one".