1213212023 has 2 divisors, whose sum is σ = 1213212024. Its totient is φ = 1213212022.

The previous prime is 1213211999. The next prime is 1213212031. The reversal of 1213212023 is 3202123121.

It is a strong prime.

It is an emirp because it is prime and its reverse (3202123121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213212023 - 2⁸ = 1213211767 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213211992 and 1213212010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213212043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606606011 + 606606012.

It is an arithmetic number, because the mean of its divisors is an integer number (606606012).

Almost surely, 2^1213212023 is an apocalyptic number.

1213212023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213212023 is an equidigital number, since it uses as much as digits as its factorization.

1213212023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1213212023 is about 34831.1932468585. The cubic root of 1213212023 is about 1066.5443069388.

Adding to 1213212023 its reverse (3202123121), we get a palindrome (4415335144).

The spelling of 1213212023 in words is "one billion, two hundred thirteen million, two hundred twelve thousand, twenty-three".