21200112201 has 32 divisors (see below), whose sum is σ = 30616548480. Its totient is φ = 13006656000.

The previous prime is 21200112137. The next prime is 21200112209. The reversal of 21200112201 is 10221100212.

It is not a de Polignac number, because 21200112201 - 2⁶ = 21200112137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21200112209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270381 + ... + 339861.

It is an arithmetic number, because the mean of its divisors is an integer number (956767140).

Almost surely, 2^21200112201 is an apocalyptic number.

It is an amenable number.

21200112201 is a deficient number, since it is larger than the sum of its proper divisors (9416436279).

21200112201 is a wasteful number, since it uses less digits than its factorization.

21200112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69657.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21200112201 its reverse (10221100212), we get a palindrome (31421212413).

It can be divided in two parts, 2120011 and 2201, that added together give a palindrome (2122212).

The spelling of 21200112201 in words is "twenty-one billion, two hundred million, one hundred twelve thousand, two hundred one".