212212021020 has 48 divisors (see below), whose sum is σ = 629146230048. Its totient is φ = 53261056000.

The previous prime is 212212021009. The next prime is 212212021033. The reversal of 212212021020 is 20120212212.

212212021020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104024481 + ... + 104026520.

It is an arithmetic number, because the mean of its divisors is an integer number (13107213126).

Almost surely, 2^212212021020 is an apocalyptic number.

212212021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212021020 is an abundant number, since it is smaller than the sum of its proper divisors (416934209028).

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

212212021020 is a wasteful number, since it uses less digits than its factorization.

212212021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208051030 (or 208051028 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212212021020 its reverse (20120212212), we get a palindrome (232332233232).

The spelling of 212212021020 in words is "two hundred twelve billion, two hundred twelve million, twenty-one thousand, twenty".