212120221002 has 64 divisors (see below), whose sum is σ = 458777769600. Its totient is φ = 65155104000.

The previous prime is 212120220973. The next prime is 212120221009. The reversal of 212120221002 is 200122021212.

212120221002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212120221009) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 20194752 + ... + 20205252.

It is an arithmetic number, because the mean of its divisors is an integer number (7168402650).

Almost surely, 2^212120221002 is an apocalyptic number.

212120221002 is an abundant number, since it is smaller than the sum of its proper divisors (246657548598).

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

212120221002 is a wasteful number, since it uses less digits than its factorization.

212120221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15351.

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

Adding to 212120221002 its reverse (200122021212), we get a palindrome (412242242214).

The spelling of 212120221002 in words is "two hundred twelve billion, one hundred twenty million, two hundred twenty-one thousand, two".