102101210200221 has 4 divisors (see below), whose sum is σ = 136134946933632. Its totient is φ = 68067473466812.

The previous prime is 102101210200219. The next prime is 102101210200273. The reversal of 102101210200221 is 122002012101201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102101210200221 - 2¹ = 102101210200219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102101210200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101210200721) 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, 17016868366701 + ... + 17016868366706.

It is an arithmetic number, because the mean of its divisors is an integer number (34033736733408).

Almost surely, 2^{102101210200221} is an apocalyptic number.

It is an amenable number.

102101210200221 is a deficient number, since it is larger than the sum of its proper divisors (34033736733411).

102101210200221 is an equidigital number, since it uses as much as digits as its factorization.

102101210200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34033736733410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102101210200221 its reverse (122002012101201), we get a palindrome (224103222301422).

The spelling of 102101210200221 in words is "one hundred two trillion, one hundred one billion, two hundred ten million, two hundred thousand, two hundred twenty-one".