211223002979929 has 2 divisors, whose sum is σ = 211223002979930. Its totient is φ = 211223002979928.

The previous prime is 211223002979909. The next prime is 211223002979977. The reversal of 211223002979929 is 929979200322112.

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., 199835401779225 + 11387601200704 = 14136315^2 + 3374552^2 .

It is a cyclic number.

It is not a de Polignac number, because 211223002979929 - 2³⁵ = 211188643241561 is a prime.

It is not a weakly prime, because it can be changed into another prime (211223002979909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611501489964 + 105611501489965.

It is an arithmetic number, because the mean of its divisors is an integer number (105611501489965).

Almost surely, 2^{211223002979929} is an apocalyptic number.

It is an amenable number.

211223002979929 is a deficient number, since it is larger than the sum of its proper divisors (1).

211223002979929 is an equidigital number, since it uses as much as digits as its factorization.

211223002979929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The spelling of 211223002979929 in words is "two hundred eleven trillion, two hundred twenty-three billion, two million, nine hundred seventy-nine thousand, nine hundred twenty-nine".