226002821 has 4 divisors (see below), whose sum is σ = 246548544. Its totient is φ = 205457100.

The previous prime is 226002769. The next prime is 226002823. The reversal of 226002821 is 128200622.

226002821 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 226002821 - 2²⁶ = 158893957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226002823) 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, 10272845 + ... + 10272866.

It is an arithmetic number, because the mean of its divisors is an integer number (61637136).

Almost surely, 2^226002821 is an apocalyptic number.

It is an amenable number.

226002821 is a deficient number, since it is larger than the sum of its proper divisors (20545723).

226002821 is a wasteful number, since it uses less digits than its factorization.

226002821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20545722.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 226002821 is about 15033.3902031445. The cubic root of 226002821 is about 609.1224692875.

The spelling of 226002821 in words is "two hundred twenty-six million, two thousand, eight hundred twenty-one".