21222005543152 has 40 divisors (see below), whose sum is σ = 41314036875264. Its totient is φ = 10560438297024.

The previous prime is 21222005543143. The next prime is 21222005543251. The reversal of 21222005543152 is 25134550022212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902608 + ... + 6577135.

Almost surely, 2^{21222005543152} is an apocalyptic number.

It is an amenable number.

21222005543152 is a deficient number, since it is larger than the sum of its proper divisors (20092031332112).

21222005543152 is a wasteful number, since it uses less digits than its factorization.

21222005543152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7480597 (or 7480591 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 21222005543152 its reverse (25134550022212), we get a palindrome (46356555565364).

The spelling of 21222005543152 in words is "twenty-one trillion, two hundred twenty-two billion, five million, five hundred forty-three thousand, one hundred fifty-two".