22031012312221 has 4 divisors (see below), whose sum is σ = 24033831613344. Its totient is φ = 20028193011100.

The previous prime is 22031012312191. The next prime is 22031012312227. The reversal of 22031012312221 is 12221321013022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22031012312221 - 2¹⁵ = 22031012279453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22031012312192 and 22031012312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031012312227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001409650545 + ... + 1001409650566.

It is an arithmetic number, because the mean of its divisors is an integer number (6008457903336).

Almost surely, 2^{22031012312221} is an apocalyptic number.

It is an amenable number.

22031012312221 is a deficient number, since it is larger than the sum of its proper divisors (2002819301123).

22031012312221 is a wasteful number, since it uses less digits than its factorization.

22031012312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002819301122.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 22031012312221 its reverse (12221321013022), we get a palindrome (34252333325243).

The spelling of 22031012312221 in words is "twenty-two trillion, thirty-one billion, twelve million, three hundred twelve thousand, two hundred twenty-one".