210221102220102 has 12 divisors (see below), whose sum is σ = 455479054810260. Its totient is φ = 70073700740028.

The previous prime is 210221102220097. The next prime is 210221102220131. The reversal of 210221102220102 is 201022201122012.

It is a happy number.

210221102220102 is a `hidden beast` number, since 21 + 0 + 221 + 102 + 220 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11678950123339 = 210221102220102 / (2 + 1 + 0 + 2 + 2 + 1 + 1 + 0 + 2 + 2 + 2 + 0 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5839475061652 + ... + 5839475061687.

It is an arithmetic number, because the mean of its divisors is an integer number (37956587900855).

Almost surely, 2^{210221102220102} is an apocalyptic number.

210221102220102 is an abundant number, since it is smaller than the sum of its proper divisors (245257952590158).

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

210221102220102 is a wasteful number, since it uses less digits than its factorization.

210221102220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11678950123347 (or 11678950123344 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210221102220102 its reverse (201022201122012), we get a palindrome (411243303342114).

The spelling of 210221102220102 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred two million, two hundred twenty thousand, one hundred two".