21514511141 has 2 divisors, whose sum is σ = 21514511142. Its totient is φ = 21514511140.

The previous prime is 21514511111. The next prime is 21514511173. The reversal of 21514511141 is 14111541512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21506222500 + 8288641 = 146650^2 + 2879^2 .

It is a cyclic number.

It is not a de Polignac number, because 21514511141 - 2²² = 21510316837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21514511141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21514511111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10757255570 + 10757255571.

It is an arithmetic number, because the mean of its divisors is an integer number (10757255571).

Almost surely, 2^21514511141 is an apocalyptic number.

It is an amenable number.

21514511141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21514511141 is an equidigital number, since it uses as much as digits as its factorization.

21514511141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 26.

The spelling of 21514511141 in words is "twenty-one billion, five hundred fourteen million, five hundred eleven thousand, one hundred forty-one".