20100112021 has 8 divisors (see below), whose sum is σ = 21928758624. Its totient is φ = 18271692720.

The previous prime is 20100112001. The next prime is 20100112033. The reversal of 20100112021 is 12021100102.

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 20100112021 - 2¹¹ = 20100109973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100111989 and 20100112007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100112001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 166131 + ... + 260383.

It is an arithmetic number, because the mean of its divisors is an integer number (2741094828).

Almost surely, 2^20100112021 is an apocalyptic number.

It is an amenable number.

20100112021 is a deficient number, since it is larger than the sum of its proper divisors (1828646603).

20100112021 is a wasteful number, since it uses less digits than its factorization.

20100112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113651.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20100112021 its reverse (12021100102), we get a palindrome (32121212123).

The spelling of 20100112021 in words is "twenty billion, one hundred million, one hundred twelve thousand, twenty-one".