221002102102012 has 24 divisors (see below), whose sum is σ = 482186404586880. Its totient is φ = 86104715104560.

The previous prime is 221002102102009. The next prime is 221002102102013. The reversal of 221002102102012 is 210201201200122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002102102013) by changing a digit.

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, 358769645962 + ... + 358769646577.

It is an arithmetic number, because the mean of its divisors is an integer number (20091100191120).

Almost surely, 2^{221002102102012} is an apocalyptic number.

221002102102012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221002102102012 is an abundant number, since it is smaller than the sum of its proper divisors (261184302484868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221002102102012 is a wasteful number, since it uses less digits than its factorization.

221002102102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717539292561 (or 717539292559 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221002102102012 its reverse (210201201200122), we get a palindrome (431203303302134).

The spelling of 221002102102012 in words is "two hundred twenty-one trillion, two billion, one hundred two million, one hundred two thousand, twelve".