20112100321 has 8 divisors (see below), whose sum is σ = 20212673600. Its totient is φ = 20011577040.

The previous prime is 20112100313. The next prime is 20112100331. The reversal of 20112100321 is 12300121102.

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 20112100321 - 2³ = 20112100313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112100331) 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, 994135 + ... + 1014163.

It is an arithmetic number, because the mean of its divisors is an integer number (2526584200).

Almost surely, 2^20112100321 is an apocalyptic number.

It is an amenable number.

20112100321 is a deficient number, since it is larger than the sum of its proper divisors (100573279).

20112100321 is a wasteful number, since it uses less digits than its factorization.

20112100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24999.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20112100321 its reverse (12300121102), we get a palindrome (32412221423).

The spelling of 20112100321 in words is "twenty billion, one hundred twelve million, one hundred thousand, three hundred twenty-one".