2663121 has 4 divisors (see below), whose sum is σ = 3550832. Its totient is φ = 1775412.

The previous prime is 2663107. The next prime is 2663137. The reversal of 2663121 is 1213662.

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 not a de Polignac number, because 2663121 - 2⁶ = 2663057 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665121) 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, 443851 + ... + 443856.

It is an arithmetic number, because the mean of its divisors is an integer number (887708).

2^2663121 is an apocalyptic number.

It is an amenable number.

2663121 is a deficient number, since it is larger than the sum of its proper divisors (887711).

2663121 is an equidigital number, since it uses as much as digits as its factorization.

2663121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887710.

The product of its digits is 432, while the sum is 21.

The square root of 2663121 is about 1631.9071664773. The cubic root of 2663121 is about 138.6107669111.

Adding to 2663121 its reverse (1213662), we get a palindrome (3876783).

It can be divided in two parts, 2663 and 121, that multiplied together give a palindrome (322223).

The spelling of 2663121 in words is "two million, six hundred sixty-three thousand, one hundred twenty-one".