21411140011 has 4 divisors (see below), whose sum is σ = 21411552400. Its totient is φ = 21410727624.

The previous prime is 21411139949. The next prime is 21411140039. The reversal of 21411140011 is 11004111412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21411140011 - 2²¹ = 21409042859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21411140111) 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 3 ways as a sum of consecutive naturals, for example, 114816 + ... + 236653.

It is an arithmetic number, because the mean of its divisors is an integer number (5352888100).

Almost surely, 2^21411140011 is an apocalyptic number.

21411140011 is a deficient number, since it is larger than the sum of its proper divisors (412389).

21411140011 is an equidigital number, since it uses as much as digits as its factorization.

21411140011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412388.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21411140011 its reverse (11004111412), we get a palindrome (32415251423).

The spelling of 21411140011 in words is "twenty-one billion, four hundred eleven million, one hundred forty thousand, eleven".