1215251043043 has 4 divisors (see below), whose sum is σ = 1217112071328. Its totient is φ = 1213390014760.

The previous prime is 1215251043011. The next prime is 1215251043089. The reversal of 1215251043043 is 3403401525121.

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

It is a cyclic number.

It is not a de Polignac number, because 1215251043043 - 2⁵ = 1215251043011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1215251042996 and 1215251043014.

It is not an unprimeable number, because it can be changed into a prime (1215251043343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930513163 + ... + 930514468.

It is an arithmetic number, because the mean of its divisors is an integer number (304278017832).

Almost surely, 2^{1215251043043} is an apocalyptic number.

1215251043043 is a deficient number, since it is larger than the sum of its proper divisors (1861028285).

1215251043043 is an equidigital number, since it uses as much as digits as its factorization.

1215251043043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861028284.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1215251043043 its reverse (3403401525121), we get a palindrome (4618652568164).

The spelling of 1215251043043 in words is "one trillion, two hundred fifteen billion, two hundred fifty-one million, forty-three thousand, forty-three".