1033211321221 has 4 divisors (see below), whose sum is σ = 1038919671244. Its totient is φ = 1027502971200.

The previous prime is 1033211321203. The next prime is 1033211321227. The reversal of 1033211321221 is 1221231123301.

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 540563152900 + 492648168321 = 735230^2 + 701889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1033211321221 - 2¹⁵ = 1033211288453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1033211321192 and 1033211321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1033211321227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2854174740 + ... + 2854175101.

It is an arithmetic number, because the mean of its divisors is an integer number (259729917811).

Almost surely, 2^{1033211321221} is an apocalyptic number.

It is an amenable number.

1033211321221 is a deficient number, since it is larger than the sum of its proper divisors (5708350023).

1033211321221 is an equidigital number, since it uses as much as digits as its factorization.

1033211321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5708350022.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1033211321221 its reverse (1221231123301), we get a palindrome (2254442444522).

The spelling of 1033211321221 in words is "one trillion, thirty-three billion, two hundred eleven million, three hundred twenty-one thousand, two hundred twenty-one".