22321203213 has 4 divisors (see below), whose sum is σ = 29761604288. Its totient is φ = 14880802140.

The previous prime is 22321203137. The next prime is 22321203251. The reversal of 22321203213 is 31230212322.

It is a happy number.

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 not a de Polignac number, because 22321203213 - 2⁸ = 22321202957 is a prime.

It is a super-3 number, since 3×22321203213³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22321203213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321203263) 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, 3720200533 + ... + 3720200538.

It is an arithmetic number, because the mean of its divisors is an integer number (7440401072).

Almost surely, 2^22321203213 is an apocalyptic number.

It is an amenable number.

22321203213 is a deficient number, since it is larger than the sum of its proper divisors (7440401075).

22321203213 is an equidigital number, since it uses as much as digits as its factorization.

22321203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7440401074.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22321203213 its reverse (31230212322), we get a palindrome (53551415535).

The spelling of 22321203213 in words is "twenty-two billion, three hundred twenty-one million, two hundred three thousand, two hundred thirteen".