22121313243203 has 4 divisors (see below), whose sum is σ = 22193369638440. Its totient is φ = 22049256847968.

The previous prime is 22121313243193. The next prime is 22121313243257. The reversal of 22121313243203 is 30234231312122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22121313243203 - 2³² = 22117018275907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121313743203) 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, 36028197158 + ... + 36028197771.

It is an arithmetic number, because the mean of its divisors is an integer number (5548342409610).

Almost surely, 2^{22121313243203} is an apocalyptic number.

22121313243203 is a deficient number, since it is larger than the sum of its proper divisors (72056395237).

22121313243203 is an equidigital number, since it uses as much as digits as its factorization.

22121313243203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72056395236.

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

Adding to 22121313243203 its reverse (30234231312122), we get a palindrome (52355544555325).

The spelling of 22121313243203 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred thirteen million, two hundred forty-three thousand, two hundred three".