2120021223 has 4 divisors (see below), whose sum is σ = 2826694968. Its totient is φ = 1413347480.

The previous prime is 2120021179. The next prime is 2120021237. The reversal of 2120021223 is 3221200212.

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 2120021223 - 2¹³ = 2120013031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120021263) 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, 353336868 + ... + 353336873.

It is an arithmetic number, because the mean of its divisors is an integer number (706673742).

Almost surely, 2^2120021223 is an apocalyptic number.

2120021223 is a deficient number, since it is larger than the sum of its proper divisors (706673745).

2120021223 is an equidigital number, since it uses as much as digits as its factorization.

2120021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706673744.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2120021223 is about 46043.6881993613. The cubic root of 2120021223 is about 1284.6359444494.

Adding to 2120021223 its reverse (3221200212), we get a palindrome (5341221435).

The spelling of 2120021223 in words is "two billion, one hundred twenty million, twenty-one thousand, two hundred twenty-three".