20523012229 has 2 divisors, whose sum is σ = 20523012230. Its totient is φ = 20523012228.

The previous prime is 20523012199. The next prime is 20523012253. The reversal of 20523012229 is 92221032502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13485480129 + 7037532100 = 116127^2 + 83890^2 .

It is a cyclic number.

It is not a de Polignac number, because 20523012229 - 2²⁵ = 20489457797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20523012197 and 20523012206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20523012329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261506114 + 10261506115.

It is an arithmetic number, because the mean of its divisors is an integer number (10261506115).

Almost surely, 2^20523012229 is an apocalyptic number.

It is an amenable number.

20523012229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20523012229 is an equidigital number, since it uses as much as digits as its factorization.

20523012229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 20523012229 in words is "twenty billion, five hundred twenty-three million, twelve thousand, two hundred twenty-nine".