22121000001223 has 2 divisors, whose sum is σ = 22121000001224. Its totient is φ = 22121000001222.

The previous prime is 22121000001193. The next prime is 22121000001251. The reversal of 22121000001223 is 32210000012122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22121000001223 - 2⁹ = 22121000000711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22121000001197 and 22121000001206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121000001323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060500000611 + 11060500000612.

It is an arithmetic number, because the mean of its divisors is an integer number (11060500000612).

Almost surely, 2^{22121000001223} is an apocalyptic number.

22121000001223 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121000001223 is an equidigital number, since it uses as much as digits as its factorization.

22121000001223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22121000001223 its reverse (32210000012122), we get a palindrome (54331000013345).

The spelling of 22121000001223 in words is "twenty-two trillion, one hundred twenty-one billion, one thousand, two hundred twenty-three".