21130241149 has 2 divisors, whose sum is σ = 21130241150. Its totient is φ = 21130241148.

The previous prime is 21130241113. The next prime is 21130241159. The reversal of 21130241149 is 94114203112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12472869124 + 8657372025 = 111682^2 + 93045^2 .

It is a cyclic number.

It is not a de Polignac number, because 21130241149 - 2¹³ = 21130232957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21130241159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565120574 + 10565120575.

It is an arithmetic number, because the mean of its divisors is an integer number (10565120575).

Almost surely, 2^21130241149 is an apocalyptic number.

It is an amenable number.

21130241149 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130241149 is an equidigital number, since it uses as much as digits as its factorization.

21130241149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 21130241149 in words is "twenty-one billion, one hundred thirty million, two hundred forty-one thousand, one hundred forty-nine".