1215043543022 has 4 divisors (see below), whose sum is σ = 1822565314536. Its totient is φ = 607521771510.

The previous prime is 1215043542961. The next prime is 1215043543039. The reversal of 1215043543022 is 2203453405121.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1215043543022² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1215043543022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303760885754 + ... + 303760885757.

It is an arithmetic number, because the mean of its divisors is an integer number (455641328634).

Almost surely, 2^{1215043543022} is an apocalyptic number.

1215043543022 is a deficient number, since it is larger than the sum of its proper divisors (607521771514).

1215043543022 is an equidigital number, since it uses as much as digits as its factorization.

1215043543022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607521771513.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1215043543022 its reverse (2203453405121), we get a palindrome (3418496948143).

The spelling of 1215043543022 in words is "one trillion, two hundred fifteen billion, forty-three million, five hundred forty-three thousand, twenty-two".