20212210229 has 2 divisors, whose sum is σ = 20212210230. Its totient is φ = 20212210228.

The previous prime is 20212210223. The next prime is 20212210259. The reversal of 20212210229 is 92201221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17109163204 + 3103047025 = 130802^2 + 55705^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212210229 - 2²⁰ = 20211161653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212210223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106105114 + 10106105115.

It is an arithmetic number, because the mean of its divisors is an integer number (10106105115).

Almost surely, 2^20212210229 is an apocalyptic number.

It is an amenable number.

20212210229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212210229 is an equidigital number, since it uses as much as digits as its factorization.

20212210229 is an evil number, because the sum of its binary digits is even.

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

The spelling of 20212210229 in words is "twenty billion, two hundred twelve million, two hundred ten thousand, two hundred twenty-nine".