221022221002 has 16 divisors (see below), whose sum is σ = 361698789312. Its totient is φ = 100457405920.

The previous prime is 221022220831. The next prime is 221022221027. The reversal of 221022221002 is 200122220122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43558 + ... + 666289.

It is an arithmetic number, because the mean of its divisors is an integer number (22606174332).

Almost surely, 2^221022221002 is an apocalyptic number.

221022221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221022221002 is a deficient number, since it is larger than the sum of its proper divisors (140676568310).

221022221002 is a wasteful number, since it uses less digits than its factorization.

221022221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724013.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221022221002 its reverse (200122220122), we get a palindrome (421144441124).

The spelling of 221022221002 in words is "two hundred twenty-one billion, twenty-two million, two hundred twenty-one thousand, two".