201020120112011 has 16 divisors (see below), whose sum is σ = 205264178064288. Its totient is φ = 196816383820800.

The previous prime is 201020120111999. The next prime is 201020120112023. The reversal of 201020120112011 is 110211021020102.

It is an interprime number because it is at equal distance from previous prime (201020120111999) and next prime (201020120112023).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020120112011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201020120112041) 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, 1153338191 + ... + 1153512471.

It is an arithmetic number, because the mean of its divisors is an integer number (12829011129018).

Almost surely, 2^{201020120112011} is an apocalyptic number.

201020120112011 is a deficient number, since it is larger than the sum of its proper divisors (4244057952277).

201020120112011 is a wasteful number, since it uses less digits than its factorization.

201020120112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289822.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201020120112011 its reverse (110211021020102), we get a palindrome (311231141132113).

The spelling of 201020120112011 in words is "two hundred one trillion, twenty billion, one hundred twenty million, one hundred twelve thousand, eleven".