212234204400 has 120 divisors (see below), whose sum is σ = 685873772400. Its totient is φ = 56094904320.

The previous prime is 212234204393. The next prime is 212234204401. The reversal of 212234204400 is 4402432212.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212234204401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 646975 + ... + 918174.

It is an arithmetic number, because the mean of its divisors is an integer number (5715614770).

Almost surely, 2^212234204400 is an apocalyptic number.

212234204400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212234204400 is an abundant number, since it is smaller than the sum of its proper divisors (473639568000).

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

212234204400 is a wasteful number, since it uses less digits than its factorization.

212234204400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565283 (or 1565272 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 212234204400 its reverse (4402432212), we get a palindrome (216636636612).

The spelling of 212234204400 in words is "two hundred twelve billion, two hundred thirty-four million, two hundred four thousand, four hundred".