21403144433332 has 6 divisors (see below), whose sum is σ = 37455502758338. Its totient is φ = 10701572216664.

The previous prime is 21403144433329. The next prime is 21403144433471. The reversal of 21403144433332 is 23333444130412.

It can be written as a sum of positive squares in only one way, i.e., 19967259888676 + 1435884544656 = 4468474^2 + 1198284^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21403144433291 and 21403144433300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2675393054163 + ... + 2675393054170.

Almost surely, 2^{21403144433332} is an apocalyptic number.

It is an amenable number.

21403144433332 is a deficient number, since it is larger than the sum of its proper divisors (16052358325006).

21403144433332 is a wasteful number, since it uses less digits than its factorization.

21403144433332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350786108337 (or 5350786108335 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 37.

Adding to 21403144433332 its reverse (23333444130412), we get a palindrome (44736588563744).

The spelling of 21403144433332 in words is "twenty-one trillion, four hundred three billion, one hundred forty-four million, four hundred thirty-three thousand, three hundred thirty-two".