221212201022002 has 32 divisors (see below), whose sum is σ = 343588528180800. Its totient is φ = 106742178155520.

The previous prime is 221212201021991. The next prime is 221212201022027. The reversal of 221212201022002 is 200220102212122.

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 15 ways as a sum of consecutive naturals, for example, 8806249 + ... + 22802947.

It is an arithmetic number, because the mean of its divisors is an integer number (10737141505650).

Almost surely, 2^{221212201022002} is an apocalyptic number.

221212201022002 is a deficient number, since it is larger than the sum of its proper divisors (122376327158798).

221212201022002 is a wasteful number, since it uses less digits than its factorization.

221212201022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13998826.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221212201022002 its reverse (200220102212122), we get a palindrome (421432303234124).

The spelling of 221212201022002 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred one million, twenty-two thousand, two".