222403021 has 8 divisors (see below), whose sum is σ = 230162688. Its totient is φ = 214680000.

The previous prime is 222403019. The next prime is 222403039. The reversal of 222403021 is 120304222.

222403021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222403021 - 2¹ = 222403019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222402986 and 222403004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222403081) 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, 3486 + ... + 21376.

It is an arithmetic number, because the mean of its divisors is an integer number (28770336).

Almost surely, 2^222403021 is an apocalyptic number.

It is an amenable number.

222403021 is a deficient number, since it is larger than the sum of its proper divisors (7759667).

222403021 is a wasteful number, since it uses less digits than its factorization.

222403021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18323.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 222403021 is about 14913.1827924156. The cubic root of 222403021 is about 605.8710863398.

Adding to 222403021 its reverse (120304222), we get a palindrome (342707243).

The spelling of 222403021 in words is "two hundred twenty-two million, four hundred three thousand, twenty-one".