21353331122 has 8 divisors (see below), whose sum is σ = 32131038636. Its totient is φ = 10642984912.

The previous prime is 21353331121. The next prime is 21353331137. The reversal of 21353331122 is 22113335312.

It can be written as a sum of positive squares in 2 ways, for example, as 18533827321 + 2819503801 = 136139^2 + 53099^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21353331091 and 21353331100.

It is not an unprimeable number, because it can be changed into a prime (21353331121) 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 3 ways as a sum of consecutive naturals, for example, 16839533 + ... + 16840800.

Almost surely, 2^21353331122 is an apocalyptic number.

21353331122 is a deficient number, since it is larger than the sum of its proper divisors (10777707514).

21353331122 is a wasteful number, since it uses less digits than its factorization.

21353331122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33680652.

The product of its digits is 3240, while the sum is 26.

Adding to 21353331122 its reverse (22113335312), we get a palindrome (43466666434).

The spelling of 21353331122 in words is "twenty-one billion, three hundred fifty-three million, three hundred thirty-one thousand, one hundred twenty-two".