212224403400 has 48 divisors (see below), whose sum is σ = 657895652400. Its totient is φ = 56593174080.

The previous prime is 212224403389. The next prime is 212224403423. The reversal of 212224403400 is 4304422212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176853070 + ... + 176854269.

It is an arithmetic number, because the mean of its divisors is an integer number (13706159425).

Almost surely, 2^212224403400 is an apocalyptic number.

212224403400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212224403400 is an abundant number, since it is smaller than the sum of its proper divisors (445671249000).

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

212224403400 is a wasteful number, since it uses less digits than its factorization.

212224403400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353707358 (or 353707349 counting only the distinct ones).

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

Adding to 212224403400 its reverse (4304422212), we get a palindrome (216528825612).

The spelling of 212224403400 in words is "two hundred twelve billion, two hundred twenty-four million, four hundred three thousand, four hundred".