1215213232132 has 6 divisors (see below), whose sum is σ = 2126623156238. Its totient is φ = 607606616064.

The previous prime is 1215213232027. The next prime is 1215213232193. The reversal of 1215213232132 is 2312323125121.

It can be written as a sum of positive squares in only one way, i.e., 629474039236 + 585739192896 = 793394^2 + 765336^2 .

It is a super-4 number, since 4×1215213232132⁴ (a number of 49 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1215213232132.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151901654013 + ... + 151901654020.

Almost surely, 2^{1215213232132} is an apocalyptic number.

It is an amenable number.

1215213232132 is a deficient number, since it is larger than the sum of its proper divisors (911409924106).

1215213232132 is a wasteful number, since it uses less digits than its factorization.

1215213232132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303803308037 (or 303803308035 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

Adding to 1215213232132 its reverse (2312323125121), we get a palindrome (3527536357253).

The spelling of 1215213232132 in words is "one trillion, two hundred fifteen billion, two hundred thirteen million, two hundred thirty-two thousand, one hundred thirty-two".