221266606 has 8 divisors (see below), whose sum is σ = 362072664. Its totient is φ = 100575720.

The previous prime is 221266541. The next prime is 221266613. The reversal of 221266606 is 606662122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5028765 + ... + 5028808.

It is an arithmetic number, because the mean of its divisors is an integer number (45259083).

Almost surely, 2^221266606 is an apocalyptic number.

221266606 is a deficient number, since it is larger than the sum of its proper divisors (140806058).

221266606 is a wasteful number, since it uses less digits than its factorization.

221266606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10057586.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 221266606 is about 14875.0329747534. The cubic root of 221266606 is about 604.8373817883.

The spelling of 221266606 in words is "two hundred twenty-one million, two hundred sixty-six thousand, six hundred six".