21143011411 has 8 divisors (see below), whose sum is σ = 21910402800. Its totient is φ = 20378174880.

The previous prime is 21143011399. The next prime is 21143011423. The reversal of 21143011411 is 11411034112.

It is an interprime number because it is at equal distance from previous prime (21143011399) and next prime (21143011423).

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 21143011411 - 2¹⁹ = 21142487123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21143011451) 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, 621856 + ... + 654973.

It is an arithmetic number, because the mean of its divisors is an integer number (2738800350).

Almost surely, 2^21143011411 is an apocalyptic number.

21143011411 is a deficient number, since it is larger than the sum of its proper divisors (767391389).

21143011411 is a wasteful number, since it uses less digits than its factorization.

21143011411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277429.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21143011411 its reverse (11411034112), we get a palindrome (32554045523).

The spelling of 21143011411 in words is "twenty-one billion, one hundred forty-three million, eleven thousand, four hundred eleven".