211302100 has 36 divisors (see below), whose sum is σ = 463087548. Its totient is φ = 83680000.

The previous prime is 211302067. The next prime is 211302103. The reversal of 211302100 is 1203112.

It can be written as a sum of positive squares in 6 ways, for example, as 14348944 + 196953156 = 3788^2 + 14034^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211302103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361 + ... + 20560.

It is an arithmetic number, because the mean of its divisors is an integer number (12863543).

Almost surely, 2^211302100 is an apocalyptic number.

211302100 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 211302100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231543774).

211302100 is an abundant number, since it is smaller than the sum of its proper divisors (251785448).

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

211302100 is a wasteful number, since it uses less digits than its factorization.

211302100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21036 (or 21029 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 211302100 is about 14536.2340377417. The cubic root of 211302100 is about 595.6181697666.

Adding to 211302100 its reverse (1203112), we get a palindrome (212505212).

The spelling of 211302100 in words is "two hundred eleven million, three hundred two thousand, one hundred".