201209942929 has 2 divisors, whose sum is σ = 201209942930. Its totient is φ = 201209942928.

The previous prime is 201209942909. The next prime is 201209942977. The reversal of 201209942929 is 929249902102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191576913025 + 9633029904 = 437695^2 + 98148^2 .

It is a cyclic number.

It is not a de Polignac number, because 201209942929 - 2²³ = 201201554321 is a prime.

It is a super-2 number, since 2×201209942929² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201209942909) 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, 100604971464 + 100604971465.

It is an arithmetic number, because the mean of its divisors is an integer number (100604971465).

Almost surely, 2^201209942929 is an apocalyptic number.

It is an amenable number.

201209942929 is a deficient number, since it is larger than the sum of its proper divisors (1).

201209942929 is an equidigital number, since it uses as much as digits as its factorization.

201209942929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 49.

The spelling of 201209942929 in words is "two hundred one billion, two hundred nine million, nine hundred forty-two thousand, nine hundred twenty-nine".