21010241429 has 2 divisors, whose sum is σ = 21010241430. Its totient is φ = 21010241428.

The previous prime is 21010241423. The next prime is 21010241459. The reversal of 21010241429 is 92414201012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20687068900 + 323172529 = 143830^2 + 17977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21010241429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21010241398 and 21010241407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010241423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505120714 + 10505120715.

It is an arithmetic number, because the mean of its divisors is an integer number (10505120715).

Almost surely, 2^21010241429 is an apocalyptic number.

It is an amenable number.

21010241429 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010241429 is an equidigital number, since it uses as much as digits as its factorization.

21010241429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 21010241429 in words is "twenty-one billion, ten million, two hundred forty-one thousand, four hundred twenty-nine".