1212000403 has 2 divisors, whose sum is σ = 1212000404. Its totient is φ = 1212000402.

The previous prime is 1212000401. The next prime is 1212000407. The reversal of 1212000403 is 3040002121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212000403 - 2¹ = 1212000401 is a prime.

Together with 1212000401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1212000401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606000201 + 606000202.

It is an arithmetic number, because the mean of its divisors is an integer number (606000202).

Almost surely, 2^1212000403 is an apocalyptic number.

1212000403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212000403 is an equidigital number, since it uses as much as digits as its factorization.

1212000403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1212000403 is about 34813.7961589942. The cubic root of 1212000403 is about 1066.1891404301.

Adding to 1212000403 its reverse (3040002121), we get a palindrome (4252002524).

The spelling of 1212000403 in words is "one billion, two hundred twelve million, four hundred three", and thus it is an aban number.