1012120002123 has 8 divisors (see below), whose sum is σ = 1350117821136. Its totient is φ = 674434425600.

The previous prime is 1012120002079. The next prime is 1012120002139. The reversal of 1012120002123 is 3212000212101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012120002123 - 2¹⁰ = 1012120001099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012120002193) 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 7 ways as a sum of consecutive naturals, for example, 78053058 + ... + 78066023.

It is an arithmetic number, because the mean of its divisors is an integer number (168764727642).

Almost surely, 2^{1012120002123} is an apocalyptic number.

1012120002123 is a deficient number, since it is larger than the sum of its proper divisors (337997819013).

1012120002123 is a wasteful number, since it uses less digits than its factorization.

1012120002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156121245.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1012120002123 its reverse (3212000212101), we get a palindrome (4224120214224).

The spelling of 1012120002123 in words is "one trillion, twelve billion, one hundred twenty million, two thousand, one hundred twenty-three".