211021221200010 has 96 divisors (see below), whose sum is σ = 548537424019200. Its totient is φ = 51931184557824.

The previous prime is 211021221200003. The next prime is 211021221200017. The reversal of 211021221200010 is 10002122120112.

211021221200010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211021221200003) and next prime (211021221200017).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (211021221200017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16069791 + ... + 26082189.

It is an arithmetic number, because the mean of its divisors is an integer number (5713931500200).

Almost surely, 2^{211021221200010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211021221200010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274268712009600).

211021221200010 is an abundant number, since it is smaller than the sum of its proper divisors (337516202819190).

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

211021221200010 is a wasteful number, since it uses less digits than its factorization.

211021221200010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016592 (or 10016579 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211021221200010 its reverse (10002122120112), we get a palindrome (221023343320122).

The spelling of 211021221200010 in words is "two hundred eleven trillion, twenty-one billion, two hundred twenty-one million, two hundred thousand, ten".