212011323100 has 72 divisors (see below), whose sum is σ = 493800457248. Its totient is φ = 78722611200.

The previous prime is 212011323059. The next prime is 212011323113. The reversal of 212011323100 is 1323110212.

It is a super-2 number, since 2×212011323100² (a number of 23 digits) contains 22 as substring.

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, 730096 + ... + 978295.

It is an arithmetic number, because the mean of its divisors is an integer number (6858339684).

Almost surely, 2^212011323100 is an apocalyptic number.

212011323100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212011323100 is an abundant number, since it is smaller than the sum of its proper divisors (281789134148).

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

212011323100 is a wasteful number, since it uses less digits than its factorization.

212011323100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708495 (or 1708488 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212011323100 its reverse (1323110212), we get a palindrome (213334433312).

The spelling of 212011323100 in words is "two hundred twelve billion, eleven million, three hundred twenty-three thousand, one hundred".