1215120544041 has 16 divisors (see below), whose sum is σ = 1646883892224. Its totient is φ = 796756156944.

The previous prime is 1215120544019. The next prime is 1215120544067. The reversal of 1215120544041 is 1404450215121.

It is not a de Polignac number, because 1215120544041 - 2⁵ = 1215120544009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1215120543041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4541805 + ... + 4801898.

It is an arithmetic number, because the mean of its divisors is an integer number (102930243264).

Almost surely, 2^{1215120544041} is an apocalyptic number.

It is an amenable number.

1215120544041 is a deficient number, since it is larger than the sum of its proper divisors (431763348183).

1215120544041 is an equidigital number, since it uses as much as digits as its factorization.

1215120544041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344420.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 1215120544041 its reverse (1404450215121), we get a palindrome (2619570759162).

The spelling of 1215120544041 in words is "one trillion, two hundred fifteen billion, one hundred twenty million, five hundred forty-four thousand, forty-one".