21222033143 has 8 divisors (see below), whose sum is σ = 21746482560. Its totient is φ = 20703075640.

The previous prime is 21222033127. The next prime is 21222033169. The reversal of 21222033143 is 34133022212.

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

It is a cyclic number.

It is not a de Polignac number, because 21222033143 - 2⁴ = 21222033127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222039143) 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, 1365155 + ... + 1380612.

It is an arithmetic number, because the mean of its divisors is an integer number (2718310320).

Almost surely, 2^21222033143 is an apocalyptic number.

21222033143 is a deficient number, since it is larger than the sum of its proper divisors (524449417).

21222033143 is a wasteful number, since it uses less digits than its factorization.

21222033143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745957.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21222033143 its reverse (34133022212), we get a palindrome (55355055355).

The spelling of 21222033143 in words is "twenty-one billion, two hundred twenty-two million, thirty-three thousand, one hundred forty-three".