20030100020123 has 4 divisors (see below), whose sum is σ = 20030109044760. Its totient is φ = 20030090995488.

The previous prime is 20030100020107. The next prime is 20030100020149. The reversal of 20030100020123 is 32102000103002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20030100020123 - 2⁴ = 20030100020107 is a prime.

It is a super-2 number, since 2×20030100020123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20030100020098 and 20030100020107.

It is not an unprimeable number, because it can be changed into a prime (20030100020323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393283 + ... + 6480851.

It is an arithmetic number, because the mean of its divisors is an integer number (5007527261190).

Almost surely, 2^{20030100020123} is an apocalyptic number.

20030100020123 is a deficient number, since it is larger than the sum of its proper divisors (9024637).

20030100020123 is an equidigital number, since it uses as much as digits as its factorization.

20030100020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9024636.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20030100020123 its reverse (32102000103002), we get a palindrome (52132100123125).

The spelling of 20030100020123 in words is "twenty trillion, thirty billion, one hundred million, twenty thousand, one hundred twenty-three".