1321612130506 has 16 divisors (see below), whose sum is σ = 1983236248224. Its totient is φ = 660533441904.

The previous prime is 1321612130473. The next prime is 1321612130533. The reversal of 1321612130506 is 6050312161231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83781636 + ... + 83797408.

It is an arithmetic number, because the mean of its divisors is an integer number (123952265514).

Almost surely, 2^{1321612130506} is an apocalyptic number.

1321612130506 is a deficient number, since it is larger than the sum of its proper divisors (661624117718).

1321612130506 is a wasteful number, since it uses less digits than its factorization.

1321612130506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30405.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 1321612130506 its reverse (6050312161231), we get a palindrome (7371924291737).

The spelling of 1321612130506 in words is "one trillion, three hundred twenty-one billion, six hundred twelve million, one hundred thirty thousand, five hundred six".