20102303121 has 8 divisors (see below), whose sum is σ = 27667686144. Its totient is φ = 12969227760.

The previous prime is 20102303113. The next prime is 20102303147. The reversal of 20102303121 is 12130320102.

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

It is not a de Polignac number, because 20102303121 - 2³ = 20102303113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20102303121.

It is not an unprimeable number, because it can be changed into a prime (20102303101) 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, 108076806 + ... + 108076991.

It is an arithmetic number, because the mean of its divisors is an integer number (3458460768).

Almost surely, 2^20102303121 is an apocalyptic number.

It is an amenable number.

20102303121 is a deficient number, since it is larger than the sum of its proper divisors (7565383023).

20102303121 is a wasteful number, since it uses less digits than its factorization.

20102303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216153831.

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

Adding to 20102303121 its reverse (12130320102), we get a palindrome (32232623223).

The spelling of 20102303121 in words is "twenty billion, one hundred two million, three hundred three thousand, one hundred twenty-one".