21121341143 has 8 divisors (see below), whose sum is σ = 24168012288. Its totient is φ = 18082004184.

The previous prime is 21121341119. The next prime is 21121341151. The reversal of 21121341143 is 34114312112.

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 21121341143 - 2¹⁴ = 21121324759 is a prime.

It is a super-2 number, since 2×21121341143² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121341113) 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, 1827371 + ... + 1838892.

It is an arithmetic number, because the mean of its divisors is an integer number (3021001536).

Almost surely, 2^21121341143 is an apocalyptic number.

21121341143 is a deficient number, since it is larger than the sum of its proper divisors (3046671145).

21121341143 is an equidigital number, since it uses as much as digits as its factorization.

21121341143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667093.

The product of its digits is 576, while the sum is 23.

Adding to 21121341143 its reverse (34114312112), we get a palindrome (55235653255).

The spelling of 21121341143 in words is "twenty-one billion, one hundred twenty-one million, three hundred forty-one thousand, one hundred forty-three".