221100102002 has 16 divisors (see below), whose sum is σ = 358854421632. Its totient is φ = 101562567120.

The previous prime is 221100101941. The next prime is 221100102007. The reversal of 221100102002 is 200201001122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221100102007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20145818 + ... + 20156789.

It is an arithmetic number, because the mean of its divisors is an integer number (22428401352).

Almost surely, 2^221100102002 is an apocalyptic number.

221100102002 is a deficient number, since it is larger than the sum of its proper divisors (137754319630).

221100102002 is a wasteful number, since it uses less digits than its factorization.

221100102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40302833.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221100102002 its reverse (200201001122), we get a palindrome (421301103124).

The spelling of 221100102002 in words is "two hundred twenty-one billion, one hundred million, one hundred two thousand, two".