212000129969 has 2 divisors, whose sum is σ = 212000129970. Its totient is φ = 212000129968.

The previous prime is 212000129947. The next prime is 212000130029. The reversal of 212000129969 is 969921000212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210313960000 + 1686169969 = 458600^2 + 41063^2 .

It is a cyclic number.

It is not a de Polignac number, because 212000129969 - 2³⁶ = 143280653233 is a prime.

It is a super-2 number, since 2×212000129969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212000129669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000064984 + 106000064985.

It is an arithmetic number, because the mean of its divisors is an integer number (106000064985).

Almost surely, 2^212000129969 is an apocalyptic number.

It is an amenable number.

212000129969 is a deficient number, since it is larger than the sum of its proper divisors (1).

212000129969 is an equidigital number, since it uses as much as digits as its factorization.

212000129969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 212000129969 in words is "two hundred twelve billion, one hundred twenty-nine thousand, nine hundred sixty-nine".