212421443222300 has 216 divisors, whose sum is σ = 511427559634992. Its totient is φ = 76502589696000.

The previous prime is 212421443222279. The next prime is 212421443222371. The reversal of 212421443222300 is 3222344124212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3368155367 + ... + 3368218433.

Almost surely, 2^{212421443222300} is an apocalyptic number.

212421443222300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212421443222300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255713779817496).

212421443222300 is an abundant number, since it is smaller than the sum of its proper divisors (299006116412692).

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

212421443222300 is a wasteful number, since it uses less digits than its factorization.

212421443222300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68009 (or 67989 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 212421443222300 its reverse (3222344124212), we get a palindrome (215643787346512).

The spelling of 212421443222300 in words is "two hundred twelve trillion, four hundred twenty-one billion, four hundred forty-three million, two hundred twenty-two thousand, three hundred".