2220244621 has 8 divisors (see below), whose sum is σ = 2573161344. Its totient is φ = 1876262640.

The previous prime is 2220244613. The next prime is 2220244627. The reversal of 2220244621 is 1264420222.

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

It is not a de Polignac number, because 2220244621 - 2³ = 2220244613 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 (2220244627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2233150 + ... + 2234143.

It is an arithmetic number, because the mean of its divisors is an integer number (321645168).

Almost surely, 2^2220244621 is an apocalyptic number.

It is an amenable number.

2220244621 is a deficient number, since it is larger than the sum of its proper divisors (352916723).

2220244621 is an equidigital number, since it uses as much as digits as its factorization.

2220244621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467371.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 2220244621 is about 47119.4717818441. The cubic root of 2220244621 is about 1304.5686631511.

Adding to 2220244621 its reverse (1264420222), we get a palindrome (3484664843).

The spelling of 2220244621 in words is "two billion, two hundred twenty million, two hundred forty-four thousand, six hundred twenty-one".