2621121 has 4 divisors (see below), whose sum is σ = 3494832. Its totient is φ = 1747412.

The previous prime is 2621119. The next prime is 2621131. The reversal of 2621121 is 1211262.

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 2621121 - 2¹ = 2621119 is a prime.

It is a D-number.

2621121 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2621121.

It is not an unprimeable number, because it can be changed into a prime (2621131) 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, 436851 + ... + 436856.

It is an arithmetic number, because the mean of its divisors is an integer number (873708).

2^2621121 is an apocalyptic number.

It is an amenable number.

2621121 is a deficient number, since it is larger than the sum of its proper divisors (873711).

2621121 is an equidigital number, since it uses as much as digits as its factorization.

2621121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873710.

The product of its digits is 48, while the sum is 15.

The square root of 2621121 is about 1618.9876466484. The cubic root of 2621121 is about 137.8782269610.

Adding to 2621121 its reverse (1211262), we get a palindrome (3832383).

The spelling of 2621121 in words is "two million, six hundred twenty-one thousand, one hundred twenty-one".