1212303220223 has 2 divisors, whose sum is σ = 1212303220224. Its totient is φ = 1212303220222.

The previous prime is 1212303220199. The next prime is 1212303220237. The reversal of 1212303220223 is 3220223032121.

It is a strong prime.

It is an emirp because it is prime and its reverse (3220223032121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212303220223 - 2¹² = 1212303216127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212303220243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606151610111 + 606151610112.

It is an arithmetic number, because the mean of its divisors is an integer number (606151610112).

Almost surely, 2^{1212303220223} is an apocalyptic number.

1212303220223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212303220223 is an equidigital number, since it uses as much as digits as its factorization.

1212303220223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1212303220223 its reverse (3220223032121), we get a palindrome (4432526252344).

The spelling of 1212303220223 in words is "one trillion, two hundred twelve billion, three hundred three million, two hundred twenty thousand, two hundred twenty-three".