4023261221 has 8 divisors (see below), whose sum is σ = 4662774144. Its totient is φ = 3399938640.

The previous prime is 4023261211. The next prime is 4023261233. The reversal of 4023261221 is 1221623204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4023261221 - 2¹⁸ = 4022999077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023261211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4047050 + ... + 4048043.

It is an arithmetic number, because the mean of its divisors is an integer number (582846768).

Almost surely, 2^4023261221 is an apocalyptic number.

It is an amenable number.

4023261221 is a deficient number, since it is larger than the sum of its proper divisors (639512923).

4023261221 is an equidigital number, since it uses as much as digits as its factorization.

4023261221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8095171.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 4023261221 is about 63429.1827237274. The cubic root of 4023261221 is about 1590.4721803466.

Adding to 4023261221 its reverse (1221623204), we get a palindrome (5244884425).

It can be divided in two parts, 402 and 3261221, that added together give a palindrome (3261623).

The spelling of 4023261221 in words is "four billion, twenty-three million, two hundred sixty-one thousand, two hundred twenty-one".