421220133300 has 288 divisors, whose sum is σ = 1359692974080. Its totient is φ = 100053964800.

The previous prime is 421220133293. The next prime is 421220133329. The reversal of 421220133300 is 3331022124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 152228517 + ... + 152231283.

It is an arithmetic number, because the mean of its divisors is an integer number (4721156160).

Almost surely, 2^421220133300 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421220133300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679846487040).

421220133300 is an abundant number, since it is smaller than the sum of its proper divisors (938472840780).

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

421220133300 is a wasteful number, since it uses less digits than its factorization.

421220133300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391 (or 4384 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 421220133300 its reverse (3331022124), we get a palindrome (424551155424).

The spelling of 421220133300 in words is "four hundred twenty-one billion, two hundred twenty million, one hundred thirty-three thousand, three hundred".