21421414141 has 4 divisors (see below), whose sum is σ = 21679503552. Its totient is φ = 21163324732.

The previous prime is 21421414123. The next prime is 21421414151. The reversal of 21421414141 is 14141412412.

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 21421414141 - 2⁷ = 21421414013 is a prime.

It is a super-3 number, since 3×21421414141³ (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 (21421414151) 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, 129044581 + ... + 129044746.

It is an arithmetic number, because the mean of its divisors is an integer number (5419875888).

Almost surely, 2^21421414141 is an apocalyptic number.

It is an amenable number.

21421414141 is a deficient number, since it is larger than the sum of its proper divisors (258089411).

21421414141 is an equidigital number, since it uses as much as digits as its factorization.

21421414141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258089410.

The product of its digits is 1024, while the sum is 25.

Adding to 21421414141 its reverse (14141412412), we get a palindrome (35562826553).

The spelling of 21421414141 in words is "twenty-one billion, four hundred twenty-one million, four hundred fourteen thousand, one hundred forty-one".