201112000021 has 16 divisors (see below), whose sum is σ = 205046768880. Its totient is φ = 197223436800.

The previous prime is 201112000003. The next prime is 201112000043. The reversal of 201112000021 is 120000211102.

It can be written as a sum of positive squares in 8 ways, for example, as 16534359396 + 184577640625 = 128586^2 + 429625^2 .

It is a cyclic number.

It is not a de Polignac number, because 201112000021 - 2⁹ = 201111999509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201111999971 and 201112000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201112000091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5006665 + ... + 5046673.

It is an arithmetic number, because the mean of its divisors is an integer number (12815423055).

Almost surely, 2^201112000021 is an apocalyptic number.

It is an amenable number.

201112000021 is a deficient number, since it is larger than the sum of its proper divisors (3934768859).

201112000021 is a wasteful number, since it uses less digits than its factorization.

201112000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40584.

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

Adding to 201112000021 its reverse (120000211102), we get a palindrome (321112211123).

The spelling of 201112000021 in words is "two hundred one billion, one hundred twelve million, twenty-one", and thus it is an aban number.