212011000100 has 72 divisors (see below), whose sum is σ = 487608478560. Its totient is φ = 79736926720.

The previous prime is 212011000093. The next prime is 212011000127. The reversal of 212011000100 is 1000110212.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1671107 + ... + 1793493.

It is an arithmetic number, because the mean of its divisors is an integer number (6772339980).

Almost surely, 2^212011000100 is an apocalyptic number.

212011000100 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 212011000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243804239280).

212011000100 is an abundant number, since it is smaller than the sum of its proper divisors (275597478460).

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

212011000100 is a wasteful number, since it uses less digits than its factorization.

212011000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123437 (or 123430 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 212011000100 its reverse (1000110212), we get a palindrome (213011110312).

The spelling of 212011000100 in words is "two hundred twelve billion, eleven million, one hundred", and thus it is an aban number.