212224132100 has 36 divisors (see below), whose sum is σ = 461206759524. Its totient is φ = 84764234880.

The previous prime is 212224132079. The next prime is 212224132103. The reversal of 212224132100 is 1231422212.

It can be written as a sum of positive squares in 6 ways, for example, as 1948692736 + 210275439364 = 44144^2 + 458558^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (212224132103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1499687 + ... + 1635086.

Almost surely, 2^212224132100 is an apocalyptic number.

212224132100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212224132100 is an abundant number, since it is smaller than the sum of its proper divisors (248982627424).

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

212224132100 is a wasteful number, since it uses less digits than its factorization.

212224132100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135464 (or 3135457 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212224132100 its reverse (1231422212), we get a palindrome (213455554312).

The spelling of 212224132100 in words is "two hundred twelve billion, two hundred twenty-four million, one hundred thirty-two thousand, one hundred".