1215512231052 has 48 divisors (see below), whose sum is σ = 3241547106560. Its totient is φ = 347269799232.

The previous prime is 1215512230981. The next prime is 1215512231057. The reversal of 1215512231052 is 2501322155121.

It is not an unprimeable number, because it can be changed into a prime (1215512231057) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1142574 + ... + 1933002.

Almost surely, 2^{1215512231052} is an apocalyptic number.

1215512231052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1215512231052 is an abundant number, since it is smaller than the sum of its proper divisors (2026034875508).

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

1215512231052 is a wasteful number, since it uses less digits than its factorization.

1215512231052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808750 (or 808748 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 1215512231052 its reverse (2501322155121), we get a palindrome (3716834386173).

The spelling of 1215512231052 in words is "one trillion, two hundred fifteen billion, five hundred twelve million, two hundred thirty-one thousand, fifty-two".