1333001221 has 8 divisors (see below), whose sum is σ = 1416034400. Its totient is φ = 1251255600.

The previous prime is 1333001203. The next prime is 1333001227. The reversal of 1333001221 is 1221003331.

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 1333001221 - 2¹³ = 1332993029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1333001195 and 1333001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333001227) 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, 319755 + ... + 323896.

It is an arithmetic number, because the mean of its divisors is an integer number (177004300).

Almost surely, 2^1333001221 is an apocalyptic number.

It is an amenable number.

1333001221 is a deficient number, since it is larger than the sum of its proper divisors (83033179).

1333001221 is a wasteful number, since it uses less digits than its factorization.

1333001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643779.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1333001221 is about 36510.2892483749. The cubic root of 1333001221 is about 1100.5510244794.

Adding to 1333001221 its reverse (1221003331), we get a palindrome (2554004552).

The spelling of 1333001221 in words is "one billion, three hundred thirty-three million, one thousand, two hundred twenty-one".