210221102002 has 4 divisors (see below), whose sum is σ = 315331653006. Its totient is φ = 105110551000.

The previous prime is 210221101973. The next prime is 210221102033. The reversal of 210221102002 is 200201122012.

It is a happy number.

210221102002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 126068313721 + 84152788281 = 355061^2 + 290091^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52555275499 + ... + 52555275502.

Almost surely, 2^210221102002 is an apocalyptic number.

210221102002 is a deficient number, since it is larger than the sum of its proper divisors (105110551004).

210221102002 is a wasteful number, since it uses less digits than its factorization.

210221102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105110551003.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210221102002 its reverse (200201122012), we get a palindrome (410422224014).

The spelling of 210221102002 in words is "two hundred ten billion, two hundred twenty-one million, one hundred two thousand, two".