21041222403533 has 8 divisors (see below), whose sum is σ = 21045098581056. Its totient is φ = 21037346604000.

The previous prime is 21041222403511. The next prime is 21041222403559. The reversal of 21041222403533 is 33530422214012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21041222403533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21041222403533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041222403503) 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, 126312488 + ... + 126478958.

It is an arithmetic number, because the mean of its divisors is an integer number (2630637322632).

Almost surely, 2^{21041222403533} is an apocalyptic number.

It is an amenable number.

21041222403533 is a deficient number, since it is larger than the sum of its proper divisors (3876177523).

21041222403533 is a wasteful number, since it uses less digits than its factorization.

21041222403533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188995.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 21041222403533 its reverse (33530422214012), we get a palindrome (54571644617545).

The spelling of 21041222403533 in words is "twenty-one trillion, forty-one billion, two hundred twenty-two million, four hundred three thousand, five hundred thirty-three".