2120201023 has 4 divisors (see below), whose sum is σ = 2121824520. Its totient is φ = 2118577528.

The previous prime is 2120201021. The next prime is 2120201093. The reversal of 2120201023 is 3201020212.

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 2120201023 - 2¹ = 2120201021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120200994 and 2120201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120201021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809788 + ... + 812401.

It is an arithmetic number, because the mean of its divisors is an integer number (530456130).

Almost surely, 2^2120201023 is an apocalyptic number.

2120201023 is a deficient number, since it is larger than the sum of its proper divisors (1623497).

2120201023 is a wasteful number, since it uses less digits than its factorization.

2120201023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623496.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2120201023 is about 46045.6406514232. The cubic root of 2120201023 is about 1284.6722602829.

Adding to 2120201023 its reverse (3201020212), we get a palindrome (5321221235).

The spelling of 2120201023 in words is "two billion, one hundred twenty million, two hundred one thousand, twenty-three".