20010123002 has 8 divisors (see below), whose sum is σ = 30426351636. Its totient is φ = 9868005792.

The previous prime is 20010122933. The next prime is 20010123031. The reversal of 20010123002 is 20032101002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19869439681 + 140683321 = 140959^2 + 11861^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68527673 + ... + 68527964.

Almost surely, 2^20010123002 is an apocalyptic number.

20010123002 is a deficient number, since it is larger than the sum of its proper divisors (10416228634).

20010123002 is a wasteful number, since it uses less digits than its factorization.

20010123002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137055712.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20010123002 its reverse (20032101002), we get a palindrome (40042224004).

The spelling of 20010123002 in words is "twenty billion, ten million, one hundred twenty-three thousand, two".