1209012401603 has 2 divisors, whose sum is σ = 1209012401604. Its totient is φ = 1209012401602.

The previous prime is 1209012401599. The next prime is 1209012401621. The reversal of 1209012401603 is 3061042109021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1209012401603 - 2² = 1209012401599 is a prime.

It is a super-3 number, since 3×1209012401603³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1209012401203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604506200801 + 604506200802.

It is an arithmetic number, because the mean of its divisors is an integer number (604506200802).

Almost surely, 2^{1209012401603} is an apocalyptic number.

1209012401603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1209012401603 is an equidigital number, since it uses as much as digits as its factorization.

1209012401603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 1209012401603 in words is "one trillion, two hundred nine billion, twelve million, four hundred one thousand, six hundred three".