2123443011 has 4 divisors (see below), whose sum is σ = 2831257352. Its totient is φ = 1415628672.

The previous prime is 2123442989. The next prime is 2123443027. The reversal of 2123443011 is 1103443212.

2123443011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2123443011 - 2¹⁵ = 2123410243 is a prime.

It is a super-2 number, since 2×2123443011² = 9018020441929492242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123443051) 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, 353907166 + ... + 353907171.

It is an arithmetic number, because the mean of its divisors is an integer number (707814338).

Almost surely, 2^2123443011 is an apocalyptic number.

2123443011 is a deficient number, since it is larger than the sum of its proper divisors (707814341).

2123443011 is an equidigital number, since it uses as much as digits as its factorization.

2123443011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707814340.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2123443011 is about 46080.8312750541. The cubic root of 2123443011 is about 1285.3267219699.

Adding to 2123443011 its reverse (1103443212), we get a palindrome (3226886223).

The spelling of 2123443011 in words is "two billion, one hundred twenty-three million, four hundred forty-three thousand, eleven".