1033130331221 has 4 divisors (see below), whose sum is σ = 1033132993452. Its totient is φ = 1033127668992.

The previous prime is 1033130331209. The next prime is 1033130331263. The reversal of 1033130331221 is 1221330313301.

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 633434524996 + 399695806225 = 795886^2 + 632215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1033130331221 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 (1033130331521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623690 + ... + 1566923.

It is an arithmetic number, because the mean of its divisors is an integer number (258283248363).

Almost surely, 2^{1033130331221} is an apocalyptic number.

It is an amenable number.

1033130331221 is a deficient number, since it is larger than the sum of its proper divisors (2662231).

1033130331221 is an equidigital number, since it uses as much as digits as its factorization.

1033130331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662230.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1033130331221 its reverse (1221330313301), we get a palindrome (2254460644522).

The spelling of 1033130331221 in words is "one trillion, thirty-three billion, one hundred thirty million, three hundred thirty-one thousand, two hundred twenty-one".