21343503122 has 8 divisors (see below), whose sum is σ = 32018199996. Its totient is φ = 10670769792.

The previous prime is 21343503121. The next prime is 21343503151. The reversal of 21343503122 is 22130534312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19881282001 + 1462221121 = 141001^2 + 38239^2 .

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 = 21343503091 and 21343503100.

It is not an unprimeable number, because it can be changed into a prime (21343503121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463403 + ... + 507374.

Almost surely, 2^21343503122 is an apocalyptic number.

21343503122 is a deficient number, since it is larger than the sum of its proper divisors (10674696874).

21343503122 is a wasteful number, since it uses less digits than its factorization.

21343503122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981772.

The product of its (nonzero) digits is 4320, while the sum is 26.

The spelling of 21343503122 in words is "twenty-one billion, three hundred forty-three million, five hundred three thousand, one hundred twenty-two".