21414431141 has 2 divisors, whose sum is σ = 21414431142. Its totient is φ = 21414431140.

The previous prime is 21414431119. The next prime is 21414431149. The reversal of 21414431141 is 14113441412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21405153025 + 9278116 = 146305^2 + 3046^2 .

It is a cyclic number.

It is not a de Polignac number, because 21414431141 - 2¹⁴ = 21414414757 is a prime.

It is a super-2 number, since 2×21414431141² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21414431141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21414431149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707215570 + 10707215571.

It is an arithmetic number, because the mean of its divisors is an integer number (10707215571).

Almost surely, 2^21414431141 is an apocalyptic number.

It is an amenable number.

21414431141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21414431141 is an equidigital number, since it uses as much as digits as its factorization.

21414431141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

Adding to 21414431141 its reverse (14113441412), we get a palindrome (35527872553).

The spelling of 21414431141 in words is "twenty-one billion, four hundred fourteen million, four hundred thirty-one thousand, one hundred forty-one".