21124002334111 has 16 divisors (see below), whose sum is σ = 21972232794240. Its totient is φ = 20290430983680.

The previous prime is 21124002334067. The next prime is 21124002334121. The reversal of 21124002334111 is 11143320042112.

It is a cyclic number.

It is not a de Polignac number, because 21124002334111 - 2⁷ = 21124002333983 is a prime.

It is a super-2 number, since 2×21124002334111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21124002334121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23638071 + ... + 24515431.

It is an arithmetic number, because the mean of its divisors is an integer number (1373264549640).

Almost surely, 2^{21124002334111} is an apocalyptic number.

21124002334111 is a deficient number, since it is larger than the sum of its proper divisors (848230460129).

21124002334111 is an equidigital number, since it uses as much as digits as its factorization.

21124002334111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885714.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21124002334111 its reverse (11143320042112), we get a palindrome (32267322376223).

The spelling of 21124002334111 in words is "twenty-one trillion, one hundred twenty-four billion, two million, three hundred thirty-four thousand, one hundred eleven".