212012021112020 has 24 divisors (see below), whose sum is σ = 451870397238624. Its totient is φ = 83539065034656.

The previous prime is 212012021111983. The next prime is 212012021112049. The reversal of 212012021112020 is 20211120210212.

It is a super-2 number, since 2×212012021112020² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212012021112020.

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 7 ways as a sum of consecutive naturals, for example, 79108961762 + ... + 79108964441.

It is an arithmetic number, because the mean of its divisors is an integer number (18827933218276).

Almost surely, 2^{212012021112020} is an apocalyptic number.

212012021112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012021112020 is an abundant number, since it is smaller than the sum of its proper divisors (239858376126604).

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

212012021112020 is a wasteful number, since it uses less digits than its factorization.

212012021112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158217926279 (or 158217926277 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212012021112020 its reverse (20211120210212), we get a palindrome (232223141322232).

The spelling of 212012021112020 in words is "two hundred twelve trillion, twelve billion, twenty-one million, one hundred twelve thousand, twenty".