21343432202 has 8 divisors (see below), whose sum is σ = 32015837412. Its totient is φ = 10671486400.

The previous prime is 21343432181. The next prime is 21343432207. The reversal of 21343432202 is 20223434312.

It can be written as a sum of positive squares in 2 ways, for example, as 21051398281 + 292033921 = 145091^2 + 17089^2 .

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

It is a super-2 number, since 2×21343432202² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21343432207) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 46802 + ... + 211842.

Almost surely, 2^21343432202 is an apocalyptic number.

21343432202 is a deficient number, since it is larger than the sum of its proper divisors (10672405210).

21343432202 is a wasteful number, since it uses less digits than its factorization.

21343432202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229704.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21343432202 its reverse (20223434312), we get a palindrome (41566866514).

The spelling of 21343432202 in words is "twenty-one billion, three hundred forty-three million, four hundred thirty-two thousand, two hundred two".