20120111201 has 8 divisors (see below), whose sum is σ = 21310612704. Its totient is φ = 18930383680.

The previous prime is 20120111197. The next prime is 20120111213. The reversal of 20120111201 is 10211102102.

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

It is a cyclic number.

It is not a de Polignac number, because 20120111201 - 2² = 20120111197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120141201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139535 + ... + 244356.

It is an arithmetic number, because the mean of its divisors is an integer number (2663826588).

Almost surely, 2^20120111201 is an apocalyptic number.

It is an amenable number.

20120111201 is a deficient number, since it is larger than the sum of its proper divisors (1190501503).

20120111201 is a wasteful number, since it uses less digits than its factorization.

20120111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386991.

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

Adding to 20120111201 its reverse (10211102102), we get a palindrome (30331213303).

Subtracting from 20120111201 its reverse (10211102102), we obtain a palindrome (9909009099).

The spelling of 20120111201 in words is "twenty billion, one hundred twenty million, one hundred eleven thousand, two hundred one".