212324100140 has 48 divisors (see below), whose sum is σ = 452619828192. Its totient is φ = 83646452736.

The previous prime is 212324100139. The next prime is 212324100143. The reversal of 212324100140 is 41001423212.

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 (212324100143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9445154 + ... + 9467606.

It is an arithmetic number, because the mean of its divisors is an integer number (9429579754).

Almost surely, 2^212324100140 is an apocalyptic number.

212324100140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212324100140 is an abundant number, since it is smaller than the sum of its proper divisors (240295728052).

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

212324100140 is a wasteful number, since it uses less digits than its factorization.

212324100140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29586 (or 29584 counting only the distinct ones).

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

Adding to 212324100140 its reverse (41001423212), we get a palindrome (253325523352).

The spelling of 212324100140 in words is "two hundred twelve billion, three hundred twenty-four million, one hundred thousand, one hundred forty".