10121211223 has 2 divisors, whose sum is σ = 10121211224. Its totient is φ = 10121211222.

The previous prime is 10121211211. The next prime is 10121211257. The reversal of 10121211223 is 32211212101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121211223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10121211197 and 10121211206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121211263) 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 as a sum of consecutive naturals, namely, 5060605611 + 5060605612.

It is an arithmetic number, because the mean of its divisors is an integer number (5060605612).

Almost surely, 2^10121211223 is an apocalyptic number.

10121211223 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121211223 is an equidigital number, since it uses as much as digits as its factorization.

10121211223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10121211223 its reverse (32211212101), we get a palindrome (42332423324).

The spelling of 10121211223 in words is "ten billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twenty-three".