212212033400 has 48 divisors (see below), whose sum is σ = 493830520800. Its totient is φ = 84809537280.

The previous prime is 212212033399. The next prime is 212212033403. The reversal of 212212033400 is 4330212212.

212212033400 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 (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212033403) 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 11 ways as a sum of consecutive naturals, for example, 244112 + ... + 695711.

It is an arithmetic number, because the mean of its divisors is an integer number (10288135850).

Almost surely, 2^212212033400 is an apocalyptic number.

212212033400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212033400 is an abundant number, since it is smaller than the sum of its proper divisors (281618487400).

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

212212033400 is a wasteful number, since it uses less digits than its factorization.

212212033400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940968 (or 940959 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212212033400 its reverse (4330212212), we get a palindrome (216542245612).

The spelling of 212212033400 in words is "two hundred twelve billion, two hundred twelve million, thirty-three thousand, four hundred".