21352043222 has 16 divisors (see below), whose sum is σ = 33177891600. Its totient is φ = 10298597760.

The previous prime is 21352043221. The next prime is 21352043249. The reversal of 21352043222 is 22234025312.

It is a super-2 number, since 2×21352043222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21352043191 and 21352043200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21352043221) by changing a digit.

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, 1455572 + ... + 1470167.

It is an arithmetic number, because the mean of its divisors is an integer number (2073618225).

Almost surely, 2^21352043222 is an apocalyptic number.

21352043222 is a deficient number, since it is larger than the sum of its proper divisors (11825848378).

21352043222 is a wasteful number, since it uses less digits than its factorization.

21352043222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925871.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 21352043222 its reverse (22234025312), we get a palindrome (43586068534).

The spelling of 21352043222 in words is "twenty-one billion, three hundred fifty-two million, forty-three thousand, two hundred twenty-two".