21433033120 has 48 divisors (see below), whose sum is σ = 50646268008. Its totient is φ = 8571397120.

The previous prime is 21433033117. The next prime is 21433033123. The reversal of 21433033120 is 2133033412.

It is an interprime number because it is at equal distance from previous prime (21433033117) and next prime (21433033123).

It can be written as a sum of positive squares in 4 ways, for example, as 16950998416 + 4482034704 = 130196^2 + 66948^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21433033091 and 21433033100.

It is not an unprimeable number, because it can be changed into a prime (21433033123) 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, 945762 + ... + 968158.

Almost surely, 2^21433033120 is an apocalyptic number.

21433033120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21433033120 is an abundant number, since it is smaller than the sum of its proper divisors (29213234888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21433033120 is a wasteful number, since it uses less digits than its factorization.

21433033120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28393 (or 28385 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21433033120 its reverse (2133033412), we get a palindrome (23566066532).

The spelling of 21433033120 in words is "twenty-one billion, four hundred thirty-three million, thirty-three thousand, one hundred twenty".