212102120201929 has 2 divisors, whose sum is σ = 212102120201930. Its totient is φ = 212102120201928.

The previous prime is 212102120201887. The next prime is 212102120202019. The reversal of 212102120201929 is 929102021201212.

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., 116282297864329 + 95819822337600 = 10783427^2 + 9788760^2 .

It is a cyclic number.

It is not a de Polignac number, because 212102120201929 - 2¹³ = 212102120193737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212102120201894 and 212102120201903.

It is not a weakly prime, because it can be changed into another prime (212102120201429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051060100964 + 106051060100965.

It is an arithmetic number, because the mean of its divisors is an integer number (106051060100965).

Almost surely, 2^{212102120201929} is an apocalyptic number.

It is an amenable number.

212102120201929 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102120201929 is an equidigital number, since it uses as much as digits as its factorization.

212102120201929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 212102120201929 in words is "two hundred twelve trillion, one hundred two billion, one hundred twenty million, two hundred one thousand, nine hundred twenty-nine".