21433401222432 has 48 divisors (see below), whose sum is σ = 56263068933120. Its totient is φ = 7144417458432.

The previous prime is 21433401222323. The next prime is 21433401222463. The reversal of 21433401222432 is 23422210433412.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 21433401222393 and 21433401222402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14726418 + ... + 16116270.

It is an arithmetic number, because the mean of its divisors is an integer number (1172147269440).

Almost surely, 2^{21433401222432} is an apocalyptic number.

It is an amenable number.

21433401222432 is an abundant number, since it is smaller than the sum of its proper divisors (34829667710688).

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

21433401222432 is a wasteful number, since it uses less digits than its factorization.

21433401222432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550505 (or 1550497 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21433401222432 its reverse (23422210433412), we get a palindrome (44855611655844).

The spelling of 21433401222432 in words is "twenty-one trillion, four hundred thirty-three billion, four hundred one million, two hundred twenty-two thousand, four hundred thirty-two".