212303221300 has 72 divisors (see below), whose sum is σ = 473455931256. Its totient is φ = 82572572160.

The previous prime is 212303221253. The next prime is 212303221313. The reversal of 212303221300 is 3122303212.

It can be written as a sum of positive squares in 12 ways, for example, as 36730489104 + 175572732196 = 191652^2 + 419014^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5950314 + ... + 5985886.

It is an arithmetic number, because the mean of its divisors is an integer number (6575776823).

Almost surely, 2^212303221300 is an apocalyptic number.

212303221300 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 212303221300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236727965628).

212303221300 is an abundant number, since it is smaller than the sum of its proper divisors (261152709956).

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

212303221300 is a wasteful number, since it uses less digits than its factorization.

212303221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37237 (or 37230 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 212303221300 its reverse (3122303212), we get a palindrome (215425524512).

The spelling of 212303221300 in words is "two hundred twelve billion, three hundred three million, two hundred twenty-one thousand, three hundred".