22121211100223 has 2 divisors, whose sum is σ = 22121211100224. Its totient is φ = 22121211100222.

The previous prime is 22121211100213. The next prime is 22121211100229. The reversal of 22121211100223 is 32200111212122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22121211100223 - 2⁴ = 22121211100207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22121211100195 and 22121211100204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121211100229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060605550111 + 11060605550112.

It is an arithmetic number, because the mean of its divisors is an integer number (11060605550112).

Almost surely, 2^{22121211100223} is an apocalyptic number.

22121211100223 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121211100223 is an equidigital number, since it uses as much as digits as its factorization.

22121211100223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 22121211100223 its reverse (32200111212122), we get a palindrome (54321322312345).

The spelling of 22121211100223 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred eleven million, one hundred thousand, two hundred twenty-three".