1212000003 has 20 divisors (see below), whose sum is σ = 1812818128. Its totient is φ = 806973840.

The previous prime is 1211999993. The next prime is 1212000011. The reversal of 1212000003 is 3000002121.

It is a happy number.

It is not a de Polignac number, because 1212000003 - 2¹³ = 1211991811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212000403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57573 + ... + 75753.

Almost surely, 2^1212000003 is an apocalyptic number.

1212000003 is a deficient number, since it is larger than the sum of its proper divisors (600818125).

1212000003 is an equidigital number, since it uses as much as digits as its factorization.

1212000003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19016 (or 19007 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1212000003 is about 34813.7904141448. The cubic root of 1212000003 is about 1066.1890231376.

Adding to 1212000003 its reverse (3000002121), we get a palindrome (4212002124).

The spelling of 1212000003 in words is "one billion, two hundred twelve million, three", and thus it is an aban number.