1321240031110 has 128 divisors (see below), whose sum is σ = 2605807615104. Its totient is φ = 480305479680.

The previous prime is 1321240031107. The next prime is 1321240031191. The reversal of 1321240031110 is 111300421231.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 634905270 + ... + 634907350.

It is an arithmetic number, because the mean of its divisors is an integer number (20357871993).

Almost surely, 2^{1321240031110} is an apocalyptic number.

1321240031110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321240031110 is a deficient number, since it is larger than the sum of its proper divisors (1284567583994).

1321240031110 is a wasteful number, since it uses less digits than its factorization.

1321240031110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1321240031110 its reverse (111300421231), we get a palindrome (1432540452341).

The spelling of 1321240031110 in words is "one trillion, three hundred twenty-one billion, two hundred forty million, thirty-one thousand, one hundred ten".