1333121421 has 16 divisors (see below), whose sum is σ = 1796755968. Its totient is φ = 879169200.

The previous prime is 1333121407. The next prime is 1333121441. The reversal of 1333121421 is 1241213331.

It is not a de Polignac number, because 1333121421 - 2¹¹ = 1333119373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333121441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99406 + ... + 112016.

It is an arithmetic number, because the mean of its divisors is an integer number (112297248).

Almost surely, 2^1333121421 is an apocalyptic number.

It is an amenable number.

1333121421 is a deficient number, since it is larger than the sum of its proper divisors (463634547).

1333121421 is a wasteful number, since it uses less digits than its factorization.

1333121421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12992.

The product of its digits is 432, while the sum is 21.

The square root of 1333121421 is about 36511.9353225764. The cubic root of 1333121421 is about 1100.5841032831.

Adding to 1333121421 its reverse (1241213331), we get a palindrome (2574334752).

The spelling of 1333121421 in words is "one billion, three hundred thirty-three million, one hundred twenty-one thousand, four hundred twenty-one".