21112000201 has 4 divisors (see below), whose sum is σ = 21112317904. Its totient is φ = 21111682500.

The previous prime is 21112000199. The next prime is 21112000229. The reversal of 21112000201 is 10200021112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21112000201 - 2¹ = 21112000199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112000241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16875 + ... + 206176.

It is an arithmetic number, because the mean of its divisors is an integer number (5278079476).

Almost surely, 2^21112000201 is an apocalyptic number.

It is an amenable number.

21112000201 is a deficient number, since it is larger than the sum of its proper divisors (317703).

21112000201 is an equidigital number, since it uses as much as digits as its factorization.

21112000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317702.

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

Adding to 21112000201 its reverse (10200021112), we get a palindrome (31312021313).

The spelling of 21112000201 in words is "twenty-one billion, one hundred twelve million, two hundred one", and thus it is an aban number.