20211002429 has 2 divisors, whose sum is σ = 20211002430. Its totient is φ = 20211002428.

The previous prime is 20211002423. The next prime is 20211002447. The reversal of 20211002429 is 92420011202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11519728900 + 8691273529 = 107330^2 + 93227^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211002429 - 2²⁴ = 20194225213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211002423) 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, 10105501214 + 10105501215.

It is an arithmetic number, because the mean of its divisors is an integer number (10105501215).

Almost surely, 2^20211002429 is an apocalyptic number.

It is an amenable number.

20211002429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211002429 is an equidigital number, since it uses as much as digits as its factorization.

20211002429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 20211002429 in words is "twenty billion, two hundred eleven million, two thousand, four hundred twenty-nine".