2101201023 has 4 divisors (see below), whose sum is σ = 2801601368. Its totient is φ = 1400800680.

The previous prime is 2101201009. The next prime is 2101201033. The reversal of 2101201023 is 3201021012.

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

It is not a de Polignac number, because 2101201023 - 2⁵ = 2101200991 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 (2101201033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350200168 + ... + 350200173.

It is an arithmetic number, because the mean of its divisors is an integer number (700400342).

Almost surely, 2^2101201023 is an apocalyptic number.

2101201023 is a deficient number, since it is larger than the sum of its proper divisors (700400345).

2101201023 is an equidigital number, since it uses as much as digits as its factorization.

2101201023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700400344.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2101201023 is about 45838.8593117237. The cubic root of 2101201023 is about 1280.8232462447.

Adding to 2101201023 its reverse (3201021012), we get a palindrome (5302222035).

The spelling of 2101201023 in words is "two billion, one hundred one million, two hundred one thousand, twenty-three".