221210020020102 has 8 divisors (see below), whose sum is σ = 442420040040216. Its totient is φ = 73736673340032.

The previous prime is 221210020020089. The next prime is 221210020020107. The reversal of 221210020020102 is 201020020012122.

It is a sphenic number, since it is the product of 3 distinct primes.

221210020020102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210020020107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18434168335003 + ... + 18434168335014.

It is an arithmetic number, because the mean of its divisors is an integer number (55302505005027).

Almost surely, 2^{221210020020102} is an apocalyptic number.

221210020020102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221210020020102 is a wasteful number, since it uses less digits than its factorization.

221210020020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36868336670022.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221210020020102 its reverse (201020020012122), we get a palindrome (422230040032224).

The spelling of 221210020020102 in words is "two hundred twenty-one trillion, two hundred ten billion, twenty million, twenty thousand, one hundred two".