22233112323221 has 4 divisors (see below), whose sum is σ = 22245941587692. Its totient is φ = 22220283058752.

The previous prime is 22233112323199. The next prime is 22233112323239. The reversal of 22233112323221 is 12232321133222.

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 8960832706225 + 13272279616996 = 2993465^2 + 3643114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22233112323221 is a prime.

It is a super-2 number, since 2×22233112323221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22233112323251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6414629636 + ... + 6414633101.

It is an arithmetic number, because the mean of its divisors is an integer number (5561485396923).

Almost surely, 2^{22233112323221} is an apocalyptic number.

It is an amenable number.

22233112323221 is a deficient number, since it is larger than the sum of its proper divisors (12829264471).

22233112323221 is a wasteful number, since it uses less digits than its factorization.

22233112323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12829264470.

The product of its digits is 10368, while the sum is 29.

Adding to 22233112323221 its reverse (12232321133222), we get a palindrome (34465433456443).

The spelling of 22233112323221 in words is "twenty-two trillion, two hundred thirty-three billion, one hundred twelve million, three hundred twenty-three thousand, two hundred twenty-one".