1001120003123 has 4 divisors (see below), whose sum is σ = 1001589794088. Its totient is φ = 1000650212160.

The previous prime is 1001120003083. The next prime is 1001120003161. The reversal of 1001120003123 is 3213000211001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001120003123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001120003098 and 1001120003107.

It is not an unprimeable number, because it can be changed into a prime (1001120000123) 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, 234892286 + ... + 234896547.

It is an arithmetic number, because the mean of its divisors is an integer number (250397448522).

Almost surely, 2^{1001120003123} is an apocalyptic number.

1001120003123 is a deficient number, since it is larger than the sum of its proper divisors (469790965).

1001120003123 is an equidigital number, since it uses as much as digits as its factorization.

1001120003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469790964.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1001120003123 its reverse (3213000211001), we get a palindrome (4214120214124).

The spelling of 1001120003123 in words is "one trillion, one billion, one hundred twenty million, three thousand, one hundred twenty-three".