1335153221 has 4 divisors (see below), whose sum is σ = 1342143744. Its totient is φ = 1328162700.

The previous prime is 1335153203. The next prime is 1335153227. The reversal of 1335153221 is 1223515331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1223515331 = 383 ⋅3194557.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1335153221 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 (1335153227) 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, 3494975 + ... + 3495356.

It is an arithmetic number, because the mean of its divisors is an integer number (335535936).

Almost surely, 2^1335153221 is an apocalyptic number.

It is an amenable number.

1335153221 is a deficient number, since it is larger than the sum of its proper divisors (6990523).

1335153221 is an equidigital number, since it uses as much as digits as its factorization.

1335153221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990522.

The product of its digits is 2700, while the sum is 26.

The square root of 1335153221 is about 36539.7485076184. The cubic root of 1335153221 is about 1101.1429500282.

Adding to 1335153221 its reverse (1223515331), we get a palindrome (2558668552).

The spelling of 1335153221 in words is "one billion, three hundred thirty-five million, one hundred fifty-three thousand, two hundred twenty-one".