21232034433 has 12 divisors (see below), whose sum is σ = 30679154688. Its totient is φ = 14149769400.

The previous prime is 21232034429. The next prime is 21232034437. The reversal of 21232034433 is 33443023212.

21232034433 is a `hidden beast` number, since 2 + 1 + 23 + 203 + 4 + 433 = 666.

It is an interprime number because it is at equal distance from previous prime (21232034429) and next prime (21232034437).

It is not a de Polignac number, because 21232034433 - 2² = 21232034429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21232034397 and 21232034406.

It is not an unprimeable number, because it can be changed into a prime (21232034437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382593 + ... + 434558.

It is an arithmetic number, because the mean of its divisors is an integer number (2556596224).

Almost surely, 2^21232034433 is an apocalyptic number.

It is an amenable number.

21232034433 is a deficient number, since it is larger than the sum of its proper divisors (9447120255).

21232034433 is a wasteful number, since it uses less digits than its factorization.

21232034433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820044 (or 820041 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 21232034433 its reverse (33443023212), we get a palindrome (54675057645).

It can be divided in two parts, 212320 and 34433, that added together give a triangular number (246753 = T₇₀₂).

The spelling of 21232034433 in words is "twenty-one billion, two hundred thirty-two million, thirty-four thousand, four hundred thirty-three".