201020019969929 has 2 divisors, whose sum is σ = 201020019969930. Its totient is φ = 201020019969928.

The previous prime is 201020019969917. The next prime is 201020019969991. The reversal of 201020019969929 is 929969910020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196674679605625 + 4345340364304 = 14024075^2 + 2084548^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020019969929 - 2⁸ = 201020019969673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (201020019969229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510009984964 + 100510009984965.

It is an arithmetic number, because the mean of its divisors is an integer number (100510009984965).

Almost surely, 2^{201020019969929} is an apocalyptic number.

It is an amenable number.

201020019969929 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020019969929 is an equidigital number, since it uses as much as digits as its factorization.

201020019969929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2834352, while the sum is 59.

The spelling of 201020019969929 in words is "two hundred one trillion, twenty billion, nineteen million, nine hundred sixty-nine thousand, nine hundred twenty-nine".