21143221341 has 8 divisors (see below), whose sum is σ = 30753776544. Its totient is φ = 12814073520.

The previous prime is 21143221291. The next prime is 21143221343. The reversal of 21143221341 is 14312234112.

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

It is not a de Polignac number, because 21143221341 - 2⁶ = 21143221277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21143221343) 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, 320351806 + ... + 320351871.

It is an arithmetic number, because the mean of its divisors is an integer number (3844222068).

Almost surely, 2^21143221341 is an apocalyptic number.

It is an amenable number.

21143221341 is a deficient number, since it is larger than the sum of its proper divisors (9610555203).

21143221341 is a wasteful number, since it uses less digits than its factorization.

21143221341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640703691.

The product of its digits is 1152, while the sum is 24.

Adding to 21143221341 its reverse (14312234112), we get a palindrome (35455455453).

The spelling of 21143221341 in words is "twenty-one billion, one hundred forty-three million, two hundred twenty-one thousand, three hundred forty-one".