1215554231132 has 6 divisors (see below), whose sum is σ = 2127219904488. Its totient is φ = 607777115564.

The previous prime is 1215554231131. The next prime is 1215554231167. The reversal of 1215554231132 is 2311324555121.

It is a junction number, because it is equal to n+sod(n) for n = 1215554231092 and 1215554231101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215554231131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151944278888 + ... + 151944278895.

It is an arithmetic number, because the mean of its divisors is an integer number (354536650748).

Almost surely, 2^{1215554231132} is an apocalyptic number.

It is an amenable number.

1215554231132 is a deficient number, since it is larger than the sum of its proper divisors (911665673356).

1215554231132 is a wasteful number, since it uses less digits than its factorization.

1215554231132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303888557787 (or 303888557785 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

Adding to 1215554231132 its reverse (2311324555121), we get a palindrome (3526878786253).

The spelling of 1215554231132 in words is "one trillion, two hundred fifteen billion, five hundred fifty-four million, two hundred thirty-one thousand, one hundred thirty-two".