1213220003 has 2 divisors, whose sum is σ = 1213220004. Its totient is φ = 1213220002.

The previous prime is 1213219993. The next prime is 1213220027. The reversal of 1213220003 is 3000223121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213220003 - 2⁸ = 1213219747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213220003.

It is not a weakly prime, because it can be changed into another prime (1213220083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606610001 + 606610002.

It is an arithmetic number, because the mean of its divisors is an integer number (606610002).

Almost surely, 2^1213220003 is an apocalyptic number.

1213220003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213220003 is an equidigital number, since it uses as much as digits as its factorization.

1213220003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1213220003 is about 34831.3077991625. The cubic root of 1213220003 is about 1066.5466453607.

Adding to 1213220003 its reverse (3000223121), we get a palindrome (4213443124).

The spelling of 1213220003 in words is "one billion, two hundred thirteen million, two hundred twenty thousand, three".