221066202 has 32 divisors (see below), whose sum is σ = 527265792. Its totient is φ = 60415344.

The previous prime is 221066191. The next prime is 221066207. The reversal of 221066202 is 202660122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (221066207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113458 + ... + 115389.

It is an arithmetic number, because the mean of its divisors is an integer number (16477056).

Almost surely, 2^221066202 is an apocalyptic number.

221066202 is an abundant number, since it is smaller than the sum of its proper divisors (306199590).

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

221066202 is a wasteful number, since it uses less digits than its factorization.

221066202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228882.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 221066202 is about 14868.2951948097. The cubic root of 221066202 is about 604.6547236432.

The spelling of 221066202 in words is "two hundred twenty-one million, sixty-six thousand, two hundred two".