1033201311221 has 4 divisors (see below), whose sum is σ = 1058401343244. Its totient is φ = 1008001279200.

The previous prime is 1033201311211. The next prime is 1033201311287. The reversal of 1033201311221 is 1221131023301.

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 192286635025 + 840914676196 = 438505^2 + 917014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1033201311221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1033201311193 and 1033201311202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1033201311211) 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, 12600015950 + ... + 12600016031.

It is an arithmetic number, because the mean of its divisors is an integer number (264600335811).

Almost surely, 2^{1033201311221} is an apocalyptic number.

It is an amenable number.

1033201311221 is a deficient number, since it is larger than the sum of its proper divisors (25200032023).

1033201311221 is an equidigital number, since it uses as much as digits as its factorization.

1033201311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25200032022.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1033201311221 its reverse (1221131023301), we get a palindrome (2254332334522).

The spelling of 1033201311221 in words is "one trillion, thirty-three billion, two hundred one million, three hundred eleven thousand, two hundred twenty-one".