1203331123123 has 4 divisors (see below), whose sum is σ = 1203454919608. Its totient is φ = 1203207326640.

The previous prime is 1203331123073. The next prime is 1203331123129. The reversal of 1203331123123 is 3213211333021.

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 1203331123123 - 2²¹ = 1203329025971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203331123129) 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, 61883661 + ... + 61903102.

It is an arithmetic number, because the mean of its divisors is an integer number (300863729902).

Almost surely, 2^{1203331123123} is an apocalyptic number.

1203331123123 is a deficient number, since it is larger than the sum of its proper divisors (123796485).

1203331123123 is an equidigital number, since it uses as much as digits as its factorization.

1203331123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123796484.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1203331123123 its reverse (3213211333021), we get a palindrome (4416542456144).

The spelling of 1203331123123 in words is "one trillion, two hundred three billion, three hundred thirty-one million, one hundred twenty-three thousand, one hundred twenty-three".