20020110123 has 16 divisors (see below), whose sum is σ = 28806865920. Its totient is φ = 12294335904.

The previous prime is 20020110119. The next prime is 20020110137. The reversal of 20020110123 is 32101102002.

It is not a de Polignac number, because 20020110123 - 2² = 20020110119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020110099 and 20020110108.

It is not an unprimeable number, because it can be changed into a prime (20020110023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517161 + ... + 554522.

It is an arithmetic number, because the mean of its divisors is an integer number (1800429120).

Almost surely, 2^20020110123 is an apocalyptic number.

20020110123 is a deficient number, since it is larger than the sum of its proper divisors (8786755797).

20020110123 is a wasteful number, since it uses less digits than its factorization.

20020110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072178.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20020110123 its reverse (32101102002), we get a palindrome (52121212125).

The spelling of 20020110123 in words is "twenty billion, twenty million, one hundred ten thousand, one hundred twenty-three".