22121230203243 has 12 divisors (see below), whose sum is σ = 31952960465400. Its totient is φ = 14747453389536.

The previous prime is 22121230203203. The next prime is 22121230203301. The reversal of 22121230203243 is 34230203212122.

22121230203243 is a `hidden beast` number, since 2 + 2 + 1 + 212 + 3 + 0 + 203 + 243 = 666.

It is not a de Polignac number, because 22121230203243 - 2⁴⁰ = 21021718575467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121230203203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1807183 + ... + 6892631.

It is an arithmetic number, because the mean of its divisors is an integer number (2662746705450).

Almost surely, 2^{22121230203243} is an apocalyptic number.

22121230203243 is a deficient number, since it is larger than the sum of its proper divisors (9831730262157).

22121230203243 is a wasteful number, since it uses less digits than its factorization.

22121230203243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568778 (or 5568775 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 22121230203243 its reverse (34230203212122), we get a palindrome (56351433415365).

The spelling of 22121230203243 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred thirty million, two hundred three thousand, two hundred forty-three".