22312043221 has 8 divisors (see below), whose sum is σ = 24050154240. Its totient is φ = 20577046512.

The previous prime is 22312043213. The next prime is 22312043239. The reversal of 22312043221 is 12234021322.

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 22312043221 - 2³ = 22312043213 is a prime.

It is a super-3 number, since 3×22312043221³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22312043192 and 22312043201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22312043521) 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, 763681 + ... + 792358.

It is an arithmetic number, because the mean of its divisors is an integer number (3006269280).

Almost surely, 2^22312043221 is an apocalyptic number.

It is an amenable number.

22312043221 is a deficient number, since it is larger than the sum of its proper divisors (1738111019).

22312043221 is a wasteful number, since it uses less digits than its factorization.

22312043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557155.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 22312043221 its reverse (12234021322), we get a palindrome (34546064543).

The spelling of 22312043221 in words is "twenty-two billion, three hundred twelve million, forty-three thousand, two hundred twenty-one".