1215414203232 has 144 divisors (see below), whose sum is σ = 3248790657840. Its totient is φ = 397859438592.

The previous prime is 1215414203141. The next prime is 1215414203233. The reversal of 1215414203232 is 2323024145121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215414203232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215414203233) 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, 145223944 + ... + 145232312.

It is an arithmetic number, because the mean of its divisors is an integer number (22561046235).

Almost surely, 2^{1215414203232} is an apocalyptic number.

1215414203232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215414203232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1624395328920).

1215414203232 is an abundant number, since it is smaller than the sum of its proper divisors (2033376454608).

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

1215414203232 is an equidigital number, since it uses as much as digits as its factorization.

1215414203232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853 (or 8778 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1215414203232 its reverse (2323024145121), we get a palindrome (3538438348353).

The spelling of 1215414203232 in words is "one trillion, two hundred fifteen billion, four hundred fourteen million, two hundred three thousand, two hundred thirty-two".