226022721 has 4 divisors (see below), whose sum is σ = 301363632. Its totient is φ = 150681812.

The previous prime is 226022717. The next prime is 226022747. The reversal of 226022721 is 127220622.

226022721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 226022721 - 2² = 226022717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 226022691 and 226022700.

It is not an unprimeable number, because it can be changed into a prime (226022711) 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, 37670451 + ... + 37670456.

It is an arithmetic number, because the mean of its divisors is an integer number (75340908).

Almost surely, 2^226022721 is an apocalyptic number.

It is an amenable number.

226022721 is a deficient number, since it is larger than the sum of its proper divisors (75340911).

226022721 is an equidigital number, since it uses as much as digits as its factorization.

226022721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75340910.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 226022721 is about 15034.0520485995. The cubic root of 226022721 is about 609.1403469130.

The spelling of 226022721 in words is "two hundred twenty-six million, twenty-two thousand, seven hundred twenty-one".