21202404143343 has 32 divisors (see below), whose sum is σ = 29401854474240. Its totient is φ = 13575869422080.

The previous prime is 21202404143339. The next prime is 21202404143351. The reversal of 21202404143343 is 34334140420212.

It is not a de Polignac number, because 21202404143343 - 2² = 21202404143339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202404143243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53531488 + ... + 53926106.

It is an arithmetic number, because the mean of its divisors is an integer number (918807952320).

Almost surely, 2^{21202404143343} is an apocalyptic number.

21202404143343 is a deficient number, since it is larger than the sum of its proper divisors (8199450330897).

21202404143343 is a wasteful number, since it uses less digits than its factorization.

21202404143343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399007.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21202404143343 its reverse (34334140420212), we get a palindrome (55536544563555).

The spelling of 21202404143343 in words is "twenty-one trillion, two hundred two billion, four hundred four million, one hundred forty-three thousand, three hundred forty-three".