21211000200210 has 256 divisors, whose sum is σ = 58891766169600. Its totient is φ = 4853692108800.

The previous prime is 21211000200199. The next prime is 21211000200239. The reversal of 21211000200210 is 1200200011212.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 54175531 + ... + 54565649.

It is an arithmetic number, because the mean of its divisors is an integer number (230045961600).

Almost surely, 2^{21211000200210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21211000200210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29445883084800).

21211000200210 is an abundant number, since it is smaller than the sum of its proper divisors (37680765969390).

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

21211000200210 is a wasteful number, since it uses less digits than its factorization.

21211000200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390377.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21211000200210 its reverse (1200200011212), we get a palindrome (22411200211422).

The spelling of 21211000200210 in words is "twenty-one trillion, two hundred eleven billion, two hundred thousand, two hundred ten".