21241222311 has 48 divisors (see below), whose sum is σ = 30339792000. Its totient is φ = 13215635136.

The previous prime is 21241222309. The next prime is 21241222333. The reversal of 21241222311 is 11322214212.

It is a happy number.

It is not a de Polignac number, because 21241222311 - 2¹ = 21241222309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241222111) 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 47 ways as a sum of consecutive naturals, for example, 22429540 + ... + 22430486.

It is an arithmetic number, because the mean of its divisors is an integer number (632079000).

Almost surely, 2^21241222311 is an apocalyptic number.

21241222311 is a deficient number, since it is larger than the sum of its proper divisors (9098569689).

21241222311 is a wasteful number, since it uses less digits than its factorization.

21241222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1257 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

Adding to 21241222311 its reverse (11322214212), we get a palindrome (32563436523).

The spelling of 21241222311 in words is "twenty-one billion, two hundred forty-one million, two hundred twenty-two thousand, three hundred eleven".