221221100112002 has 16 divisors (see below), whose sum is σ = 342632960448000. Its totient is φ = 107012135452320.

The previous prime is 221221100111989. The next prime is 221221100112017. The reversal of 221221100112002 is 200211001122122.

It is a super-2 number, since 2×221221100112002² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505318502 + ... + 505756097.

It is an arithmetic number, because the mean of its divisors is an integer number (21414560028000).

Almost surely, 2^{221221100112002} is an apocalyptic number.

221221100112002 is a deficient number, since it is larger than the sum of its proper divisors (121411860335998).

221221100112002 is a wasteful number, since it uses less digits than its factorization.

221221100112002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011078161.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221221100112002 its reverse (200211001122122), we get a palindrome (421432101234124).

The spelling of 221221100112002 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred million, one hundred twelve thousand, two".