212140313243420 has 24 divisors (see below), whose sum is σ = 445605837080544. Its totient is φ = 84834948293696.

The previous prime is 212140313243401. The next prime is 212140313243489. The reversal of 212140313243420 is 24342313041212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323480587 + ... + 1323640866.

It is an arithmetic number, because the mean of its divisors is an integer number (18566909878356).

Almost surely, 2^{212140313243420} is an apocalyptic number.

212140313243420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212140313243420 is an abundant number, since it is smaller than the sum of its proper divisors (233465523837124).

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

212140313243420 is a wasteful number, since it uses less digits than its factorization.

212140313243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647125469 (or 2647125467 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 212140313243420 its reverse (24342313041212), we get a palindrome (236482626284632).

The spelling of 212140313243420 in words is "two hundred twelve trillion, one hundred forty billion, three hundred thirteen million, two hundred forty-three thousand, four hundred twenty".