415520221212 has 72 divisors (see below), whose sum is σ = 1056024317712. Its totient is φ = 137758752000.

The previous prime is 415520221199. The next prime is 415520221217. The reversal of 415520221212 is 212122025514.

415520221212 is a `hidden beast` number, since 4 + 15 + 520 + 2 + 2 + 121 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415520221217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8318712 + ... + 8368512.

Almost surely, 2^415520221212 is an apocalyptic number.

It is an amenable number.

415520221212 is an abundant number, since it is smaller than the sum of its proper divisors (640504096500).

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

415520221212 is a wasteful number, since it uses less digits than its factorization.

415520221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51059 (or 51054 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 415520221212 its reverse (212122025514), we get a palindrome (627642246726).

The spelling of 415520221212 in words is "four hundred fifteen billion, five hundred twenty million, two hundred twenty-one thousand, two hundred twelve".