20212234129 has 2 divisors, whose sum is σ = 20212234130. Its totient is φ = 20212234128.

The previous prime is 20212234127. The next prime is 20212234153. The reversal of 20212234129 is 92143221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20205201025 + 7033104 = 142145^2 + 2652^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212234129 - 2¹ = 20212234127 is a prime.

Together with 20212234127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20212234097 and 20212234106.

It is not a weakly prime, because it can be changed into another prime (20212234127) 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, 10106117064 + 10106117065.

It is an arithmetic number, because the mean of its divisors is an integer number (10106117065).

Almost surely, 2^20212234129 is an apocalyptic number.

It is an amenable number.

20212234129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212234129 is an equidigital number, since it uses as much as digits as its factorization.

20212234129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 20212234129 in words is "twenty billion, two hundred twelve million, two hundred thirty-four thousand, one hundred twenty-nine".