421533320221200 has 480 divisors, whose sum is σ = 1530249421768704. Its totient is φ = 98293260800000.

The previous prime is 421533320221171. The next prime is 421533320221219. The reversal of 421533320221200 is 2122023335124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 32940085 + ... + 43910315.

Almost surely, 2^{421533320221200} is an apocalyptic number.

421533320221200 is a gapful number since it is divisible by the number (40) 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 421533320221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765124710884352).

421533320221200 is an abundant number, since it is smaller than the sum of its proper divisors (1108716101547504).

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

421533320221200 is a wasteful number, since it uses less digits than its factorization.

421533320221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10970375 (or 10970364 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 421533320221200 its reverse (2122023335124), we get a palindrome (423655343556324).

The spelling of 421533320221200 in words is "four hundred twenty-one trillion, five hundred thirty-three billion, three hundred twenty million, two hundred twenty-one thousand, two hundred".