212021111204 has 96 divisors (see below), whose sum is σ = 446811832320. Its totient is φ = 86119977600.

The previous prime is 212021111201. The next prime is 212021111251. The reversal of 212021111204 is 402111120212.

212021111204 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 (212021111201) 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, 13870814 + ... + 13886090.

It is an arithmetic number, because the mean of its divisors is an integer number (4654289920).

Almost surely, 2^212021111204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212021111204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223405916160).

212021111204 is an abundant number, since it is smaller than the sum of its proper divisors (234790721116).

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

212021111204 is a wasteful number, since it uses less digits than its factorization.

212021111204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15649 (or 15647 counting only the distinct ones).

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

Adding to 212021111204 its reverse (402111120212), we get a palindrome (614132231416).

The spelling of 212021111204 in words is "two hundred twelve billion, twenty-one million, one hundred eleven thousand, two hundred four".