20111012201 has 16 divisors (see below), whose sum is σ = 23093351424. Its totient is φ = 17156135184.

The previous prime is 20111012197. The next prime is 20111012221. The reversal of 20111012201 is 10221011102.

It is a cyclic number.

It is not a de Polignac number, because 20111012201 - 2² = 20111012197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111012221) 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 15 ways as a sum of consecutive naturals, for example, 2180666 + ... + 2189868.

It is an arithmetic number, because the mean of its divisors is an integer number (1443334464).

Almost surely, 2^20111012201 is an apocalyptic number.

It is an amenable number.

20111012201 is a deficient number, since it is larger than the sum of its proper divisors (2982339223).

20111012201 is a wasteful number, since it uses less digits than its factorization.

20111012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10660.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20111012201 its reverse (10221011102), we get a palindrome (30332023303).

The spelling of 20111012201 in words is "twenty billion, one hundred eleven million, twelve thousand, two hundred one".