21021200200102 has 8 divisors (see below), whose sum is σ = 31622670042696. Its totient is φ = 10480310185872.

The previous prime is 21021200200087. The next prime is 21021200200141. The reversal of 21021200200102 is 20100200212012.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15144956223 + ... + 15144957610.

It is an arithmetic number, because the mean of its divisors is an integer number (3952833755337).

Almost surely, 2^{21021200200102} is an apocalyptic number.

21021200200102 is a deficient number, since it is larger than the sum of its proper divisors (10601469842594).

21021200200102 is a wasteful number, since it uses less digits than its factorization.

21021200200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30289914182.

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

Adding to 21021200200102 its reverse (20100200212012), we get a palindrome (41121400412114).

The spelling of 21021200200102 in words is "twenty-one trillion, twenty-one billion, two hundred million, two hundred thousand, one hundred two".