10001020123 has 2 divisors, whose sum is σ = 10001020124. Its totient is φ = 10001020122.

The previous prime is 10001020093. The next prime is 10001020181. The reversal of 10001020123 is 32102010001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10001020123 - 2³³ = 1411085531 is a prime.

It is not a weakly prime, because it can be changed into another prime (10001020223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000510061 + 5000510062.

It is an arithmetic number, because the mean of its divisors is an integer number (5000510062).

Almost surely, 2^10001020123 is an apocalyptic number.

10001020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001020123 is an equidigital number, since it uses as much as digits as its factorization.

10001020123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10001020123 its reverse (32102010001), we get a palindrome (42103030124).

The spelling of 10001020123 in words is "ten billion, one million, twenty thousand, one hundred twenty-three".