221002202006 has 24 divisors (see below), whose sum is σ = 338018176440. Its totient is φ = 108340197056.

The previous prime is 221002201991. The next prime is 221002202009. The reversal of 221002202006 is 600202200122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002202009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17849690 + ... + 17862066.

It is an arithmetic number, because the mean of its divisors is an integer number (14084090685).

Almost surely, 2^221002202006 is an apocalyptic number.

221002202006 is a deficient number, since it is larger than the sum of its proper divisors (117015974434).

221002202006 is an equidigital number, since it uses as much as digits as its factorization.

221002202006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13216 (or 12827 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 221002202006 its reverse (600202200122), we get a palindrome (821204402128).

The spelling of 221002202006 in words is "two hundred twenty-one billion, two million, two hundred two thousand, six".