212131130240240 has 20 divisors (see below), whose sum is σ = 493204877808744. Its totient is φ = 84852452096064.

The previous prime is 212131130240233. The next prime is 212131130240279. The reversal of 212131130240240 is 42042031131212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325819563922 + ... + 1325819564081.

Almost surely, 2^{212131130240240} is an apocalyptic number.

212131130240240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212131130240240 is an abundant number, since it is smaller than the sum of its proper divisors (281073747568504).

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

212131130240240 is a wasteful number, since it uses less digits than its factorization.

212131130240240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651639128016 (or 2651639128010 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 212131130240240 its reverse (42042031131212), we get a palindrome (254173161371452).

The spelling of 212131130240240 in words is "two hundred twelve trillion, one hundred thirty-one billion, one hundred thirty million, two hundred forty thousand, two hundred forty".