1333101028261 has 4 divisors (see below), whose sum is σ = 1334981284300. Its totient is φ = 1331220772224.

The previous prime is 1333101028249. The next prime is 1333101028309. The reversal of 1333101028261 is 1628201013331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 756063291361 + 577037736900 = 869519^2 + 759630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333101028261 - 2⁵ = 1333101028229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333101028201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 940126956 + ... + 940128373.

It is an arithmetic number, because the mean of its divisors is an integer number (333745321075).

Almost surely, 2^{1333101028261} is an apocalyptic number.

It is an amenable number.

1333101028261 is a deficient number, since it is larger than the sum of its proper divisors (1880256039).

1333101028261 is an equidigital number, since it uses as much as digits as its factorization.

1333101028261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880256038.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 1333101028261 in words is "one trillion, three hundred thirty-three billion, one hundred one million, twenty-eight thousand, two hundred sixty-one".