1020012303123 has 20 divisors (see below), whose sum is σ = 1662242273208. Its totient is φ = 618189274080.

The previous prime is 1020012303067. The next prime is 1020012303169. The reversal of 1020012303123 is 3213032100201.

It is not a de Polignac number, because 1020012303123 - 2⁶ = 1020012303059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020012303096 and 1020012303105.

It is not an unprimeable number, because it can be changed into a prime (1020012301123) 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 19 ways as a sum of consecutive naturals, for example, 572396586 + ... + 572398367.

Almost surely, 2^{1020012303123} is an apocalyptic number.

1020012303123 is a deficient number, since it is larger than the sum of its proper divisors (642229970085).

1020012303123 is a wasteful number, since it uses less digits than its factorization.

1020012303123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144794976 (or 1144794967 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1020012303123 its reverse (3213032100201), we get a palindrome (4233044403324).

The spelling of 1020012303123 in words is "one trillion, twenty billion, twelve million, three hundred three thousand, one hundred twenty-three".