421316635212 has 216 divisors, whose sum is σ = 1254712979520. Its totient is φ = 118137579840.

The previous prime is 421316635199. The next prime is 421316635241. The reversal of 421316635212 is 212536613124.

421316635212 is a `hidden beast` number, since 4 + 2 + 1 + 3 + 1 + 6 + 635 + 2 + 12 = 666.

It is a super-2 number, since 2×421316635212² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 71 ways as a sum of consecutive naturals, for example, 6112839 + ... + 6181377.

Almost surely, 2^421316635212 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 421316635212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627356489760).

421316635212 is an abundant number, since it is smaller than the sum of its proper divisors (833396344308).

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

421316635212 is a wasteful number, since it uses less digits than its factorization.

421316635212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68641 (or 68617 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 421316635212 in words is "four hundred twenty-one billion, three hundred sixteen million, six hundred thirty-five thousand, two hundred twelve".