1299283099321 has 3 divisors (see below), whose sum is σ = 1299284239183. Its totient is φ = 1299281959460.

The previous prime is 1299283099313. The next prime is 1299283099381. The reversal of 1299283099321 is 1239903829921.

The square root of 1299283099321 is 1139861.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 964204199721 + 335078899600 = 981939^2 + 578860^2 .

It is not a de Polignac number, because 1299283099321 - 2³ = 1299283099313 is a prime.

It is a super-2 number, since 2×1299283099321² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299283099381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 569931 + ... + 1709791.

Almost surely, 2^{1299283099321} is an apocalyptic number.

1299283099321 is the 1139861-st square number.

1299283099321 is the 569931-st centered octagonal number.

It is an amenable number.

1299283099321 is a deficient number, since it is larger than the sum of its proper divisors (1139862).

1299283099321 is an frugal number, since it uses more digits than its factorization.

1299283099321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279722 (or 1139861 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 58.

The spelling of 1299283099321 in words is "one trillion, two hundred ninety-nine billion, two hundred eighty-three million, ninety-nine thousand, three hundred twenty-one".