1321031230100 has 18 divisors (see below), whose sum is σ = 2866637769534. Its totient is φ = 528412492000.

The previous prime is 1321031230091. The next prime is 1321031230163. The reversal of 1321031230100 is 10321301231.

It can be written as a sum of positive squares in 3 ways, for example, as 275786723716 + 1045244506384 = 525154^2 + 1022372^2 .

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 5 ways as a sum of consecutive naturals, for example, 6605156051 + ... + 6605156250.

It is an arithmetic number, because the mean of its divisors is an integer number (159257653863).

Almost surely, 2^{1321031230100} is an apocalyptic number.

1321031230100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321031230100 is an abundant number, since it is smaller than the sum of its proper divisors (1545606539434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321031230100 is a wasteful number, since it uses less digits than its factorization.

1321031230100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13210312315 (or 13210312308 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1321031230100 its reverse (10321301231), we get a palindrome (1331352531331).

The spelling of 1321031230100 in words is "one trillion, three hundred twenty-one billion, thirty-one million, two hundred thirty thousand, one hundred".