212310021223 has 2 divisors, whose sum is σ = 212310021224. Its totient is φ = 212310021222.

The previous prime is 212310021193. The next prime is 212310021227. The reversal of 212310021223 is 322120013212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212310021223 - 2¹³ = 212310013031 is a prime.

It is a super-2 number, since 2×212310021223² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212310021223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212310021227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155010611 + 106155010612.

It is an arithmetic number, because the mean of its divisors is an integer number (106155010612).

Almost surely, 2^212310021223 is an apocalyptic number.

212310021223 is a deficient number, since it is larger than the sum of its proper divisors (1).

212310021223 is an equidigital number, since it uses as much as digits as its factorization.

212310021223 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212310021223 its reverse (322120013212), we get a palindrome (534430034435).

The spelling of 212310021223 in words is "two hundred twelve billion, three hundred ten million, twenty-one thousand, two hundred twenty-three".