212021223104 has 56 divisors (see below), whose sum is σ = 449730193248. Its totient is φ = 98928220160.

The previous prime is 212021223049. The next prime is 212021223107. The reversal of 212021223104 is 401322120212.

212021223104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212021223104² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212021223107) 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 7 ways as a sum of consecutive naturals, for example, 1696187 + ... + 1816890.

It is an arithmetic number, because the mean of its divisors is an integer number (8030896308).

Almost surely, 2^212021223104 is an apocalyptic number.

It is an amenable number.

212021223104 is an abundant number, since it is smaller than the sum of its proper divisors (237708970144).

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

212021223104 is a wasteful number, since it uses less digits than its factorization.

212021223104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513153 (or 3513143 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212021223104 its reverse (401322120212), we get a palindrome (613343343316).

The spelling of 212021223104 in words is "two hundred twelve billion, twenty-one million, two hundred twenty-three thousand, one hundred four".