1215023012133 has 32 divisors (see below), whose sum is σ = 1907978526720. Its totient is φ = 673308589440.

The previous prime is 1215023012083. The next prime is 1215023012143. The reversal of 1215023012133 is 3312103205121.

It is a happy number.

It is not a de Polignac number, because 1215023012133 - 2¹³ = 1215023003941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215023012143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4081293 + ... + 4368866.

It is an arithmetic number, because the mean of its divisors is an integer number (59624328960).

Almost surely, 2^{1215023012133} is an apocalyptic number.

It is an amenable number.

1215023012133 is a deficient number, since it is larger than the sum of its proper divisors (692955514587).

1215023012133 is a wasteful number, since it uses less digits than its factorization.

1215023012133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450377.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 1215023012133 its reverse (3312103205121), we get a palindrome (4527126217254).

The spelling of 1215023012133 in words is "one trillion, two hundred fifteen billion, twenty-three million, twelve thousand, one hundred thirty-three".