1213339701289 has 3 divisors (see below), whose sum is σ = 1213340802807. Its totient is φ = 1213338599772.

The previous prime is 1213339701229. The next prime is 1213339701307. The reversal of 1213339701289 is 9821079333121.

It is a happy number.

The square root of 1213339701289 is 1101517.

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., 1007684707225 + 205654994064 = 1003835^2 + 453492^2 .

It is not a de Polignac number, because 1213339701289 - 2⁹ = 1213339700777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213339701229) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 550759 + ... + 1652275.

It is an arithmetic number, because the mean of its divisors is an integer number (404446934269).

Almost surely, 2^{1213339701289} is an apocalyptic number.

1213339701289 is the 1101517-th square number.

1213339701289 is the 550759-th centered octagonal number.

It is an amenable number.

1213339701289 is a deficient number, since it is larger than the sum of its proper divisors (1101518).

1213339701289 is an frugal number, since it uses more digits than its factorization.

1213339701289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203034 (or 1101517 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

Multiplying 1213339701289 by its sum of digits (49), we get a square (59453645363161 = 7710619²).

The spelling of 1213339701289 in words is "one trillion, two hundred thirteen billion, three hundred thirty-nine million, seven hundred one thousand, two hundred eighty-nine".