4011323221 has 4 divisors (see below), whose sum is σ = 4025497792. Its totient is φ = 3997148652.

The previous prime is 4011323203. The next prime is 4011323237. The reversal of 4011323221 is 1223231104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4011323221 - 2⁵ = 4011323189 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 (4011323201) 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, 7086861 + ... + 7087426.

It is an arithmetic number, because the mean of its divisors is an integer number (1006374448).

Almost surely, 2^4011323221 is an apocalyptic number.

It is an amenable number.

4011323221 is a deficient number, since it is larger than the sum of its proper divisors (14174571).

4011323221 is a wasteful number, since it uses less digits than its factorization.

4011323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14174570.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4011323221 is about 63335.0078629505. The cubic root of 4011323221 is about 1588.8975152005.

Adding to 4011323221 its reverse (1223231104), we get a palindrome (5234554325).

The spelling of 4011323221 in words is "four billion, eleven million, three hundred twenty-three thousand, two hundred twenty-one".