1203212123103 has 4 divisors (see below), whose sum is σ = 1604282830808. Its totient is φ = 802141415400.

The previous prime is 1203212123059. The next prime is 1203212123107. The reversal of 1203212123103 is 3013212123021.

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

It is not a de Polignac number, because 1203212123103 - 2⁹ = 1203212122591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1203212123103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203212123107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200535353848 + ... + 200535353853.

It is an arithmetic number, because the mean of its divisors is an integer number (401070707702).

Almost surely, 2^{1203212123103} is an apocalyptic number.

1203212123103 is a deficient number, since it is larger than the sum of its proper divisors (401070707705).

1203212123103 is an equidigital number, since it uses as much as digits as its factorization.

1203212123103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401070707704.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1203212123103 its reverse (3013212123021), we get a palindrome (4216424246124).

The spelling of 1203212123103 in words is "one trillion, two hundred three billion, two hundred twelve million, one hundred twenty-three thousand, one hundred three".