1215531052130 has 16 divisors (see below), whose sum is σ = 2190965474880. Its totient is φ = 485543625072.

The previous prime is 1215531052123. The next prime is 1215531052133. The reversal of 1215531052130 is 312501355121.

It is a junction number, because it is equal to n+sod(n) for n = 1215531052093 and 1215531052102.

It is not an unprimeable number, because it can be changed into a prime (1215531052133) 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 7 ways as a sum of consecutive naturals, for example, 83591840 + ... + 83606379.

It is an arithmetic number, because the mean of its divisors is an integer number (136935342180).

Almost surely, 2^{1215531052130} is an apocalyptic number.

1215531052130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215531052130 is a deficient number, since it is larger than the sum of its proper divisors (975434422750).

1215531052130 is a wasteful number, since it uses less digits than its factorization.

1215531052130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167198953.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 1215531052130 in words is "one trillion, two hundred fifteen billion, five hundred thirty-one million, fifty-two thousand, one hundred thirty".