22121312203 has 8 divisors (see below), whose sum is σ = 23967277488. Its totient is φ = 20335870464.

The previous prime is 22121312177. The next prime is 22121312207. The reversal of 22121312203 is 30221312122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121312203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121312207) 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, 15130126 + ... + 15131587.

It is an arithmetic number, because the mean of its divisors is an integer number (2995909686).

Almost surely, 2^22121312203 is an apocalyptic number.

22121312203 is a deficient number, since it is larger than the sum of its proper divisors (1845965285).

22121312203 is a wasteful number, since it uses less digits than its factorization.

22121312203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30261773.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22121312203 its reverse (30221312122), we get a palindrome (52342624325).

The spelling of 22121312203 in words is "twenty-two billion, one hundred twenty-one million, three hundred twelve thousand, two hundred three".