2011201020023 has 4 divisors (see below), whose sum is σ = 2165908790808. Its totient is φ = 1856493249240.

The previous prime is 2011201019999. The next prime is 2011201020041. The reversal of 2011201020023 is 3200201021102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011201020023 - 2¹⁰ = 2011201018999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011201020043) 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 3 ways as a sum of consecutive naturals, for example, 77353885373 + ... + 77353885398.

It is an arithmetic number, because the mean of its divisors is an integer number (541477197702).

Almost surely, 2^{2011201020023} is an apocalyptic number.

2011201020023 is a deficient number, since it is larger than the sum of its proper divisors (154707770785).

2011201020023 is a wasteful number, since it uses less digits than its factorization.

2011201020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154707770784.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2011201020023 its reverse (3200201021102), we get a palindrome (5211402041125).

The spelling of 2011201020023 in words is "two trillion, eleven billion, two hundred one million, twenty thousand, twenty-three".