2120211023 has 4 divisors (see below), whose sum is σ = 2423098320. Its totient is φ = 1817323728.

The previous prime is 2120211011. The next prime is 2120211043. The reversal of 2120211023 is 3201120212.

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 2120211023 - 2⁶ = 2120210959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120210989 and 2120211007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120211043) 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, 151443638 + ... + 151443651.

It is an arithmetic number, because the mean of its divisors is an integer number (605774580).

Almost surely, 2^2120211023 is an apocalyptic number.

2120211023 is a deficient number, since it is larger than the sum of its proper divisors (302887297).

2120211023 is an equidigital number, since it uses as much as digits as its factorization.

2120211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302887296.

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

The square root of 2120211023 is about 46045.7492392077. The cubic root of 2120211023 is about 1284.6742800131.

Adding to 2120211023 its reverse (3201120212), we get a palindrome (5321331235).

The spelling of 2120211023 in words is "two billion, one hundred twenty million, two hundred eleven thousand, twenty-three".