2233398721 has 8 divisors (see below), whose sum is σ = 2311070400. Its totient is φ = 2155770960.

The previous prime is 2233398709. The next prime is 2233398733. The reversal of 2233398721 is 1278933322.

2233398721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2233398709) and next prime (2233398733).

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 2233398721 - 2¹¹ = 2233396673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2233398701) 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, 118570 + ... + 136108.

It is an arithmetic number, because the mean of its divisors is an integer number (288883800).

Almost surely, 2^2233398721 is an apocalyptic number.

It is an amenable number.

2233398721 is a deficient number, since it is larger than the sum of its proper divisors (77671679).

2233398721 is a wasteful number, since it uses less digits than its factorization.

2233398721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21959.

The product of its digits is 108864, while the sum is 40.

The square root of 2233398721 is about 47258.8480710226. The cubic root of 2233398721 is about 1307.1399486066.

The spelling of 2233398721 in words is "two billion, two hundred thirty-three million, three hundred ninety-eight thousand, seven hundred twenty-one".