21210110200102 has 8 divisors (see below), whose sum is σ = 31815207843336. Its totient is φ = 10605040918992.

The previous prime is 21210110200067. The next prime is 21210110200109. The reversal of 21210110200102 is 20100201101212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210110200109) 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, 5110348 + ... + 8278639.

It is an arithmetic number, because the mean of its divisors is an integer number (3976900980417).

Almost surely, 2^{21210110200102} is an apocalyptic number.

21210110200102 is a deficient number, since it is larger than the sum of its proper divisors (10605097643234).

21210110200102 is a wasteful number, since it uses less digits than its factorization.

21210110200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14181062.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21210110200102 its reverse (20100201101212), we get a palindrome (41310311301314).

The spelling of 21210110200102 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, two hundred thousand, one hundred two".