210221100121002 has 16 divisors (see below), whose sum is σ = 420557611265760. Its totient is φ = 70054464869712.

The previous prime is 210221100120989. The next prime is 210221100121033. The reversal of 210221100121002 is 200121001122012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4808768977 + ... + 4808812692.

It is an arithmetic number, because the mean of its divisors is an integer number (26284850704110).

Almost surely, 2^{210221100121002} is an apocalyptic number.

210221100121002 is an abundant number, since it is smaller than the sum of its proper divisors (210336511144758).

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

210221100121002 is a wasteful number, since it uses less digits than its factorization.

210221100121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9617585317.

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

Adding to 210221100121002 its reverse (200121001122012), we get a palindrome (410342101243014).

The spelling of 210221100121002 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, two".