1321231033130 has 16 divisors (see below), whose sum is σ = 2394177042600. Its totient is φ = 524945483712.

The previous prime is 1321231033127. The next prime is 1321231033193. The reversal of 1321231033130 is 313301321231.

It can be written as a sum of positive squares in 4 ways, for example, as 492022282249 + 829208750881 = 701443^2 + 910609^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1321231033096 and 1321231033105.

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, 443364629 + ... + 443367608.

Almost surely, 2^{1321231033130} is an apocalyptic number.

1321231033130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321231033130 is a deficient number, since it is larger than the sum of its proper divisors (1072946009470).

1321231033130 is a wasteful number, since it uses less digits than its factorization.

1321231033130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886732393.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1321231033130 its reverse (313301321231), we get a palindrome (1634532354361).

The spelling of 1321231033130 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-one million, thirty-three thousand, one hundred thirty".