1020202030123 has 4 divisors (see below), whose sum is σ = 1022893856440. Its totient is φ = 1017510203808.

The previous prime is 1020202030109. The next prime is 1020202030157. The reversal of 1020202030123 is 3210302020201.

1020202030123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1020202030123 - 2¹⁷ = 1020201899051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020202030097 and 1020202030106.

It is not an unprimeable number, because it can be changed into a prime (1020202030163) 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, 1345912590 + ... + 1345913347.

It is an arithmetic number, because the mean of its divisors is an integer number (255723464110).

Almost surely, 2^{1020202030123} is an apocalyptic number.

1020202030123 is a deficient number, since it is larger than the sum of its proper divisors (2691826317).

1020202030123 is an equidigital number, since it uses as much as digits as its factorization.

1020202030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691826316.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1020202030123 its reverse (3210302020201), we get a palindrome (4230504050324).

The spelling of 1020202030123 in words is "one trillion, twenty billion, two hundred two million, thirty thousand, one hundred twenty-three".