221626227 has 8 divisors (see below), whose sum is σ = 296021440. Its totient is φ = 147490920.

The previous prime is 221626217. The next prime is 221626247. The reversal of 221626227 is 722626122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-221626227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221626194 and 221626203.

It is not an unprimeable number, because it can be changed into a prime (221626217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62977 + ... + 66402.

It is an arithmetic number, because the mean of its divisors is an integer number (37002680).

Almost surely, 2^221626227 is an apocalyptic number.

221626227 is a deficient number, since it is larger than the sum of its proper divisors (74395213).

221626227 is a wasteful number, since it uses less digits than its factorization.

221626227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129953.

The product of its digits is 8064, while the sum is 30.

The square root of 221626227 is about 14887.1161411470. The cubic root of 221626227 is about 605.1648818641.

The spelling of 221626227 in words is "two hundred twenty-one million, six hundred twenty-six thousand, two hundred twenty-seven".