2204610721 has 8 divisors (see below), whose sum is σ = 2222901504. Its totient is φ = 2186368800.

The previous prime is 2204610703. The next prime is 2204610739. The reversal of 2204610721 is 1270164022.

It is an interprime number because it is at equal distance from previous prime (2204610703) and next prime (2204610739).

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

It is a cyclic number.

It is not a de Polignac number, because 2204610721 - 2⁷ = 2204610593 is a prime.

It is a super-2 number, since 2×2204610721² = 9720616862296279682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2204613721) 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, 81336 + ... + 104998.

It is an arithmetic number, because the mean of its divisors is an integer number (277862688).

Almost surely, 2^2204610721 is an apocalyptic number.

It is an amenable number.

2204610721 is a deficient number, since it is larger than the sum of its proper divisors (18290783).

2204610721 is a wasteful number, since it uses less digits than its factorization.

2204610721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24431.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2204610721 is about 46953.2823240293. The cubic root of 2204610721 is about 1301.4993983564.

Adding to 2204610721 its reverse (1270164022), we get a palindrome (3474774743).

The spelling of 2204610721 in words is "two billion, two hundred four million, six hundred ten thousand, seven hundred twenty-one".