210211022100 has 144 divisors (see below), whose sum is σ = 634802495040. Its totient is φ = 53657011200.

The previous prime is 210211021991. The next prime is 210211022101. The reversal of 210211022100 is 1220112012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210211022101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 490671 + ... + 813129.

It is an arithmetic number, because the mean of its divisors is an integer number (4408350660).

Almost surely, 2^210211022100 is an apocalyptic number.

210211022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210211022100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317401247520).

210211022100 is an abundant number, since it is smaller than the sum of its proper divisors (424591472940).

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

210211022100 is a wasteful number, since it uses less digits than its factorization.

210211022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322570 (or 322563 counting only the distinct ones).

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

Adding to 210211022100 its reverse (1220112012), we get a palindrome (211431134112).

The spelling of 210211022100 in words is "two hundred ten billion, two hundred eleven million, twenty-two thousand, one hundred".