1215550032312 has 128 divisors (see below), whose sum is σ = 3891125629440. Its totient is φ = 307194094080.

The previous prime is 1215550032299. The next prime is 1215550032337. The reversal of 1215550032312 is 2132300555121.

It is a self number, because there is not a number n which added to its sum of digits gives 1215550032312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8820343 + ... + 8957094.

It is an arithmetic number, because the mean of its divisors is an integer number (30399418980).

Almost surely, 2^{1215550032312} is an apocalyptic number.

1215550032312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1215550032312 is an abundant number, since it is smaller than the sum of its proper divisors (2675575597128).

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

1215550032312 is a wasteful number, since it uses less digits than its factorization.

1215550032312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17777501 (or 17777497 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 1215550032312 its reverse (2132300555121), we get a palindrome (3347850587433).

The spelling of 1215550032312 in words is "one trillion, two hundred fifteen billion, five hundred fifty million, thirty-two thousand, three hundred twelve".