21337222243 has 8 divisors (see below), whose sum is σ = 22461693120. Its totient is φ = 20212897320.

The previous prime is 21337222241. The next prime is 21337222307. The reversal of 21337222243 is 34222273312.

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

It is a cyclic number.

It is not a de Polignac number, because 21337222243 - 2¹ = 21337222241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21337222241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393828 + ... + 444718.

It is an arithmetic number, because the mean of its divisors is an integer number (2807711640).

Almost surely, 2^21337222243 is an apocalyptic number.

21337222243 is a deficient number, since it is larger than the sum of its proper divisors (1124470877).

21337222243 is a wasteful number, since it uses less digits than its factorization.

21337222243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72977.

The product of its digits is 24192, while the sum is 31.

Adding to 21337222243 its reverse (34222273312), we get a palindrome (55559495555).

The spelling of 21337222243 in words is "twenty-one billion, three hundred thirty-seven million, two hundred twenty-two thousand, two hundred forty-three".