221282046 has 12 divisors (see below), whose sum is σ = 479444472. Its totient is φ = 73760676.

The previous prime is 221282003. The next prime is 221282059. The reversal of 221282046 is 640282122.

It is a happy number.

It is a super-2 number, since 2×221282046² = 97931487763892232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6146706 + ... + 6146741.

It is an arithmetic number, because the mean of its divisors is an integer number (39953706).

Almost surely, 2^221282046 is an apocalyptic number.

221282046 is an abundant number, since it is smaller than the sum of its proper divisors (258162426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221282046 is a wasteful number, since it uses less digits than its factorization.

221282046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293455 (or 12293452 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 221282046 is about 14875.5519561460. The cubic root of 221282046 is about 604.8514499934.

The spelling of 221282046 in words is "two hundred twenty-one million, two hundred eighty-two thousand, forty-six".