212021320232120 has 128 divisors (see below), whose sum is σ = 555289862400000. Its totient is φ = 71359152049152.

The previous prime is 212021320232119. The next prime is 212021320232123. The reversal of 212021320232120 is 21232023120212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021320232123) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 27140720 + ... + 34068479.

It is an arithmetic number, because the mean of its divisors is an integer number (4338202050000).

Almost surely, 2^{212021320232120} is an apocalyptic number.

212021320232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021320232120 is an abundant number, since it is smaller than the sum of its proper divisors (343268542167880).

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

212021320232120 is a wasteful number, since it uses less digits than its factorization.

212021320232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61209445 (or 61209441 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 212021320232120 its reverse (21232023120212), we get a palindrome (233253343352332).

The spelling of 212021320232120 in words is "two hundred twelve trillion, twenty-one billion, three hundred twenty million, two hundred thirty-two thousand, one hundred twenty".