1133320421 has 4 divisors (see below), whose sum is σ = 1139652000. Its totient is φ = 1126988844.

The previous prime is 1133320411. The next prime is 1133320501. The reversal of 1133320421 is 1240233311.

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: 1240233311 = 1901 ⋅652411.

It is a cyclic number.

It is not a de Polignac number, because 1133320421 - 2²⁶ = 1066211557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1133320393 and 1133320402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133320411) 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, 3165521 + ... + 3165878.

It is an arithmetic number, because the mean of its divisors is an integer number (284913000).

Almost surely, 2^1133320421 is an apocalyptic number.

It is an amenable number.

1133320421 is a deficient number, since it is larger than the sum of its proper divisors (6331579).

1133320421 is an equidigital number, since it uses as much as digits as its factorization.

1133320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331578.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1133320421 is about 33664.8246839338. The cubic root of 1133320421 is about 1042.5996419011.

Adding to 1133320421 its reverse (1240233311), we get a palindrome (2373553732).

The spelling of 1133320421 in words is "one billion, one hundred thirty-three million, three hundred twenty thousand, four hundred twenty-one".