221022002002 has 16 divisors (see below), whose sum is σ = 332216759160. Its totient is φ = 110283314688.

The previous prime is 221022001997. The next prime is 221022002011. The reversal of 221022002002 is 200200220122.

It can be written as a sum of positive squares in 4 ways, for example, as 137188011321 + 83833990681 = 370389^2 + 289541^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877998 + ... + 1992214.

Almost surely, 2^221022002002 is an apocalyptic number.

221022002002 is a deficient number, since it is larger than the sum of its proper divisors (111194757158).

221022002002 is a wasteful number, since it uses less digits than its factorization.

221022002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116205.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 221022002002 its reverse (200200220122), we get a palindrome (421222222124).

The spelling of 221022002002 in words is "two hundred twenty-one billion, twenty-two million, two thousand, two".