1203123041121 has 4 divisors (see below), whose sum is σ = 1604164054832. Its totient is φ = 802082027412.

The previous prime is 1203123041089. The next prime is 1203123041129. The reversal of 1203123041121 is 1211403213021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1203123041121 - 2⁵ = 1203123041089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203123041129) 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, 200520506851 + ... + 200520506856.

It is an arithmetic number, because the mean of its divisors is an integer number (401041013708).

Almost surely, 2^{1203123041121} is an apocalyptic number.

It is an amenable number.

1203123041121 is a deficient number, since it is larger than the sum of its proper divisors (401041013711).

1203123041121 is an equidigital number, since it uses as much as digits as its factorization.

1203123041121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401041013710.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1203123041121 its reverse (1211403213021), we get a palindrome (2414526254142).

The spelling of 1203123041121 in words is "one trillion, two hundred three billion, one hundred twenty-three million, forty-one thousand, one hundred twenty-one".