1212220222223 has 2 divisors, whose sum is σ = 1212220222224. Its totient is φ = 1212220222222.

The previous prime is 1212220222189. The next prime is 1212220222229. The reversal of 1212220222223 is 3222220222121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212220222223 - 2⁸ = 1212220221967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212220222229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606110111111 + 606110111112.

It is an arithmetic number, because the mean of its divisors is an integer number (606110111112).

Almost surely, 2^{1212220222223} is an apocalyptic number.

1212220222223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212220222223 is an equidigital number, since it uses as much as digits as its factorization.

1212220222223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1212220222223 its reverse (3222220222121), we get a palindrome (4434440444344).

The spelling of 1212220222223 in words is "one trillion, two hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty-three".