221201002 has 32 divisors (see below), whose sum is σ = 382072320. Its totient is φ = 94990320.

The previous prime is 221200999. The next prime is 221201017. The reversal of 221201002 is 200102122.

221201002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221201002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268363 + ... + 269185.

It is an arithmetic number, because the mean of its divisors is an integer number (11939760).

Almost surely, 2^221201002 is an apocalyptic number.

221201002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221201002 is a deficient number, since it is larger than the sum of its proper divisors (160871318).

221201002 is a wasteful number, since it uses less digits than its factorization.

221201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 221201002 is about 14872.8276396925. The cubic root of 221201002 is about 604.7775991961. Note that the first 3 decimals are identical.

Adding to 221201002 its reverse (200102122), we get a palindrome (421303124).

The spelling of 221201002 in words is "two hundred twenty-one million, two hundred one thousand, two".