1303133120021 has 8 divisors (see below), whose sum is σ = 1379832720984. Its totient is φ = 1226438487040.

The previous prime is 1303133119973. The next prime is 1303133120033. The reversal of 1303133120021 is 1200213313031.

It can be written as a sum of positive squares in 4 ways, for example, as 392608762225 + 910524357796 = 626585^2 + 954214^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1303133120021 - 2²⁶ = 1303066011157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1303133119975 and 1303133120002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303133120921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695060 + ... + 1757661.

It is an arithmetic number, because the mean of its divisors is an integer number (172479090123).

Almost surely, 2^{1303133120021} is an apocalyptic number.

It is an amenable number.

1303133120021 is a deficient number, since it is larger than the sum of its proper divisors (76699600963).

1303133120021 is a wasteful number, since it uses less digits than its factorization.

1303133120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483991.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1303133120021 its reverse (1200213313031), we get a palindrome (2503346433052).

The spelling of 1303133120021 in words is "one trillion, three hundred three billion, one hundred thirty-three million, one hundred twenty thousand, twenty-one".