20020102123 has 8 divisors (see below), whose sum is σ = 22889917440. Its totient is φ = 17152737000.

The previous prime is 20020102061. The next prime is 20020102127. The reversal of 20020102123 is 32120102002.

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

It is not a de Polignac number, because 20020102123 - 2³³ = 11430167531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020102127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595003 + ... + 627748.

It is an arithmetic number, because the mean of its divisors is an integer number (2861239680).

Almost surely, 2^20020102123 is an apocalyptic number.

20020102123 is a deficient number, since it is larger than the sum of its proper divisors (2869815317).

20020102123 is a wasteful number, since it uses less digits than its factorization.

20020102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225097.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20020102123 its reverse (32120102002), we get a palindrome (52140204125).

The spelling of 20020102123 in words is "twenty billion, twenty million, one hundred two thousand, one hundred twenty-three".