212223233400 has 96 divisors (see below), whose sum is σ = 668677254000. Its totient is φ = 55665100800.

The previous prime is 212223233381. The next prime is 212223233423. The reversal of 212223233400 is 4332322212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2862625 + ... + 2935824.

Almost surely, 2^212223233400 is an apocalyptic number.

212223233400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212223233400 is an abundant number, since it is smaller than the sum of its proper divisors (456454020600).

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

212223233400 is a wasteful number, since it uses less digits than its factorization.

212223233400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798529 (or 5798520 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 212223233400 its reverse (4332322212), we get a palindrome (216555555612).

The spelling of 212223233400 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred thirty-three thousand, four hundred".