221645002 has 8 divisors (see below), whose sum is σ = 332531136. Its totient is φ = 110801292.

The previous prime is 221644991. The next prime is 221645023. The reversal of 221645002 is 200546122.

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

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, 12703 + ... + 24589.

It is an arithmetic number, because the mean of its divisors is an integer number (41566392).

Almost surely, 2^221645002 is an apocalyptic number.

221645002 is a deficient number, since it is larger than the sum of its proper divisors (110886134).

221645002 is a wasteful number, since it uses less digits than its factorization.

221645002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21212.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 221645002 is about 14887.7467066041. The cubic root of 221645002 is about 605.1819701693.

The spelling of 221645002 in words is "two hundred twenty-one million, six hundred forty-five thousand, two".