1215121044343 has 8 divisors (see below), whose sum is σ = 1259319815280. Its totient is φ = 1171075476480.

The previous prime is 1215121044331. The next prime is 1215121044409. The reversal of 1215121044343 is 3434401215121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215121044343 - 2²¹ = 1215118947191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215121044323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38284618 + ... + 38316343.

It is an arithmetic number, because the mean of its divisors is an integer number (157414976910).

Almost surely, 2^{1215121044343} is an apocalyptic number.

1215121044343 is a deficient number, since it is larger than the sum of its proper divisors (44198770937).

1215121044343 is an equidigital number, since it uses as much as digits as its factorization.

1215121044343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76601537.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 1215121044343 its reverse (3434401215121), we get a palindrome (4649522259464).

The spelling of 1215121044343 in words is "one trillion, two hundred fifteen billion, one hundred twenty-one million, forty-four thousand, three hundred forty-three".