21124403141 has 4 divisors (see below), whose sum is σ = 21290737152. Its totient is φ = 20958069132.

The previous prime is 21124403101. The next prime is 21124403143. The reversal of 21124403141 is 14130442112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21124403141 - 2⁶ = 21124403077 is a prime.

It is a super-3 number, since 3×21124403141³ (a number of 32 digits) contains 333 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 (21124403143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83166815 + ... + 83167068.

It is an arithmetic number, because the mean of its divisors is an integer number (5322684288).

Almost surely, 2^21124403141 is an apocalyptic number.

It is an amenable number.

21124403141 is a deficient number, since it is larger than the sum of its proper divisors (166334011).

21124403141 is a wasteful number, since it uses less digits than its factorization.

21124403141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166334010.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21124403141 its reverse (14130442112), we get a palindrome (35254845253).

The spelling of 21124403141 in words is "twenty-one billion, one hundred twenty-four million, four hundred three thousand, one hundred forty-one".