1213222003 has 4 divisors (see below), whose sum is σ = 1386539440. Its totient is φ = 1039904568.

The previous prime is 1213222001. The next prime is 1213222013. The reversal of 1213222003 is 3002223121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1213222003 - 2¹ = 1213222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213222001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86658708 + ... + 86658721.

It is an arithmetic number, because the mean of its divisors is an integer number (346634860).

Almost surely, 2^1213222003 is an apocalyptic number.

1213222003 is a deficient number, since it is larger than the sum of its proper divisors (173317437).

1213222003 is an equidigital number, since it uses as much as digits as its factorization.

1213222003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173317436.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1213222003 is about 34831.3365089541. The cubic root of 1213222003 is about 1066.5472314298.

Adding to 1213222003 its reverse (3002223121), we get a palindrome (4215445124).

The spelling of 1213222003 in words is "one billion, two hundred thirteen million, two hundred twenty-two thousand, three".