21200221002110 has 128 divisors (see below), whose sum is σ = 39003736502016. Its totient is φ = 8295544258560.

The previous prime is 21200221002089. The next prime is 21200221002113. The reversal of 21200221002110 is 1120012200212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200221002113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33073667390 + ... + 33073668030.

It is an arithmetic number, because the mean of its divisors is an integer number (304716691422).

Almost surely, 2^{21200221002110} is an apocalyptic number.

21200221002110 is a deficient number, since it is larger than the sum of its proper divisors (17803515499906).

21200221002110 is a wasteful number, since it uses less digits than its factorization.

21200221002110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21200221002110 its reverse (1120012200212), we get a palindrome (22320233202322).

The spelling of 21200221002110 in words is "twenty-one trillion, two hundred billion, two hundred twenty-one million, two thousand, one hundred ten".