212440000320020 has 48 divisors (see below), whose sum is σ = 515309006132928. Its totient is φ = 72706738076160.

The previous prime is 212440000319941. The next prime is 212440000320047. The reversal of 212440000320020 is 20023000044212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212440000319974 and 212440000320001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28401065822 + ... + 28401073301.

It is an arithmetic number, because the mean of its divisors is an integer number (10735604294436).

Almost surely, 2^{212440000320020} is an apocalyptic number.

212440000320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212440000320020 is an abundant number, since it is smaller than the sum of its proper divisors (302869005812908).

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

212440000320020 is a wasteful number, since it uses less digits than its factorization.

212440000320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56802139160 (or 56802139158 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 212440000320020 its reverse (20023000044212), we get a palindrome (232463000364232).

The spelling of 212440000320020 in words is "two hundred twelve trillion, four hundred forty billion, three hundred twenty thousand, twenty".