21344343202 has 16 divisors (see below), whose sum is σ = 39404941632. Its totient is φ = 8443915920.

The previous prime is 21344343197. The next prime is 21344343203. The reversal of 21344343202 is 20234344312.

It is a super-2 number, since 2×21344343202² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21344343203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58638124 + ... + 58638487.

It is an arithmetic number, because the mean of its divisors is an integer number (2462808852).

Almost surely, 2^21344343202 is an apocalyptic number.

21344343202 is a deficient number, since it is larger than the sum of its proper divisors (18060598430).

21344343202 is a wasteful number, since it uses less digits than its factorization.

21344343202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117276633.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21344343202 its reverse (20234344312), we get a palindrome (41578687514).

The spelling of 21344343202 in words is "twenty-one billion, three hundred forty-four million, three hundred forty-three thousand, two hundred two".