1203101122123 has 4 divisors (see below), whose sum is σ = 1203103344960. Its totient is φ = 1203098899288.

The previous prime is 1203101122103. The next prime is 1203101122133. The reversal of 1203101122123 is 3212211013021.

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 1203101122123 - 2²⁹ = 1202564251211 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 1203101122123.

It is not an unprimeable number, because it can be changed into a prime (1203101122103) 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, 286758 + ... + 1577476.

It is an arithmetic number, because the mean of its divisors is an integer number (300775836240).

Almost surely, 2^{1203101122123} is an apocalyptic number.

1203101122123 is a deficient number, since it is larger than the sum of its proper divisors (2222837).

1203101122123 is an equidigital number, since it uses as much as digits as its factorization.

1203101122123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222836.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1203101122123 its reverse (3212211013021), we get a palindrome (4415312135144).

The spelling of 1203101122123 in words is "one trillion, two hundred three billion, one hundred one million, one hundred twenty-two thousand, one hundred twenty-three".