20111202201 has 8 divisors (see below), whose sum is σ = 26826198400. Its totient is φ = 13401837072.

The previous prime is 20111202191. The next prime is 20111202217. The reversal of 20111202201 is 10220211102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20111202201 - 2²³ = 20102813593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20111202401) 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, 1399426 + ... + 1413723.

It is an arithmetic number, because the mean of its divisors is an integer number (3353274800).

Almost surely, 2^20111202201 is an apocalyptic number.

It is an amenable number.

20111202201 is a deficient number, since it is larger than the sum of its proper divisors (6714996199).

20111202201 is a wasteful number, since it uses less digits than its factorization.

20111202201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815535.

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

Adding to 20111202201 its reverse (10220211102), we get a palindrome (30331413303).

The spelling of 20111202201 in words is "twenty billion, one hundred eleven million, two hundred two thousand, two hundred one".