21211002200010 has 128 divisors (see below), whose sum is σ = 59772943296000. Its totient is φ = 4715475139584.

The previous prime is 21211002199999. The next prime is 21211002200081. The reversal of 21211002200010 is 1000220011212.

It is a super-2 number, since 2×21211002200010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20863212 + ... + 21856248.

It is an arithmetic number, because the mean of its divisors is an integer number (466976119500).

Almost surely, 2^{21211002200010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21211002200010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29886471648000).

21211002200010 is an abundant number, since it is smaller than the sum of its proper divisors (38561941095990).

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

21211002200010 is a wasteful number, since it uses less digits than its factorization.

21211002200010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995840.

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

Adding to 21211002200010 its reverse (1000220011212), we get a palindrome (22211222211222).

The spelling of 21211002200010 in words is "twenty-one trillion, two hundred eleven billion, two million, two hundred thousand, ten".