21357227343 has 8 divisors (see below), whose sum is σ = 29975056000. Its totient is φ = 13488775128.

The previous prime is 21357227317. The next prime is 21357227351. The reversal of 21357227343 is 34372275312.

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

It is not a de Polignac number, because 21357227343 - 2¹⁶ = 21357161807 is a prime.

It is a super-2 number, since 2×21357227343² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21357222343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187344043 + ... + 187344156.

It is an arithmetic number, because the mean of its divisors is an integer number (3746882000).

Almost surely, 2^21357227343 is an apocalyptic number.

21357227343 is a deficient number, since it is larger than the sum of its proper divisors (8617828657).

21357227343 is a wasteful number, since it uses less digits than its factorization.

21357227343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374688221.

The product of its digits is 211680, while the sum is 39.

The spelling of 21357227343 in words is "twenty-one billion, three hundred fifty-seven million, two hundred twenty-seven thousand, three hundred forty-three".