20102123013 has 8 divisors (see below), whose sum is σ = 30631806528. Its totient is φ = 11486927424.

The previous prime is 20102122969. The next prime is 20102123017. The reversal of 20102123013 is 31032120102.

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

It is not a de Polignac number, because 20102123013 - 2¹² = 20102118917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102122983 and 20102123001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102123017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478621956 + ... + 478621997.

It is an arithmetic number, because the mean of its divisors is an integer number (3828975816).

Almost surely, 2^20102123013 is an apocalyptic number.

It is an amenable number.

20102123013 is a deficient number, since it is larger than the sum of its proper divisors (10529683515).

20102123013 is an equidigital number, since it uses as much as digits as its factorization.

20102123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957243963.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20102123013 its reverse (31032120102), we get a palindrome (51134243115).

The spelling of 20102123013 in words is "twenty billion, one hundred two million, one hundred twenty-three thousand, thirteen".