2241099721 has 6 divisors (see below), whose sum is σ = 2606993610. Its totient is φ = 1920942576.

The previous prime is 2241099713. The next prime is 2241099727. The reversal of 2241099721 is 1279901422.

2241099721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1622881225 + 618218496 = 40285^2 + 24864^2 .

It is not a de Polignac number, because 2241099721 - 2³ = 2241099713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2241099727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22868316 + ... + 22868413.

It is an arithmetic number, because the mean of its divisors is an integer number (434498935).

Almost surely, 2^2241099721 is an apocalyptic number.

It is an amenable number.

2241099721 is a deficient number, since it is larger than the sum of its proper divisors (365893889).

2241099721 is an equidigital number, since it uses as much as digits as its factorization.

2241099721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45736743 (or 45736736 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2241099721 is about 47340.2547627281. The cubic root of 2241099721 is about 1308.6406116818.

The spelling of 2241099721 in words is "two billion, two hundred forty-one million, ninety-nine thousand, seven hundred twenty-one".