222226621 has 8 divisors (see below), whose sum is σ = 232038144. Its totient is φ = 212427600.

The previous prime is 222226553. The next prime is 222226633. The reversal of 222226621 is 126622222.

It is a happy number.

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 222226621 - 2⁷ = 222226493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222226651) 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, 65671 + ... + 68971.

It is an arithmetic number, because the mean of its divisors is an integer number (29004768).

Almost surely, 2^222226621 is an apocalyptic number.

It is an amenable number.

222226621 is a deficient number, since it is larger than the sum of its proper divisors (9811523).

222226621 is a wasteful number, since it uses less digits than its factorization.

222226621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251.

The product of its digits is 2304, while the sum is 25.

The square root of 222226621 is about 14907.2673887604. The cubic root of 222226621 is about 605.7108608059.

Adding to 222226621 its reverse (126622222), we get a palindrome (348848843).

The spelling of 222226621 in words is "two hundred twenty-two million, two hundred twenty-six thousand, six hundred twenty-one".