20031110121 has 8 divisors (see below), whose sum is σ = 29136160224. Its totient is φ = 12140066720.

The previous prime is 20031110059. The next prime is 20031110147. The reversal of 20031110121 is 12101113002.

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

It is a cyclic number.

It is not a de Polignac number, because 20031110121 - 2¹⁹ = 20030585833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20031110097 and 20031110106.

It is not an unprimeable number, because it can be changed into a prime (20031110821) 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, 303501636 + ... + 303501701.

It is an arithmetic number, because the mean of its divisors is an integer number (3642020028).

Almost surely, 2^20031110121 is an apocalyptic number.

It is an amenable number.

20031110121 is a deficient number, since it is larger than the sum of its proper divisors (9105050103).

20031110121 is a wasteful number, since it uses less digits than its factorization.

20031110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607003351.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20031110121 its reverse (12101113002), we get a palindrome (32132223123).

The spelling of 20031110121 in words is "twenty billion, thirty-one million, one hundred ten thousand, one hundred twenty-one".