20102011999973 has 2 divisors, whose sum is σ = 20102011999974. Its totient is φ = 20102011999972.

The previous prime is 20102011999957. The next prime is 20102012000011. The reversal of 20102011999973 is 37999911020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11744726535364 + 8357285464609 = 3427058^2 + 2890897^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102011999973 - 2⁴ = 20102011999957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102011999913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051005999986 + 10051005999987.

It is an arithmetic number, because the mean of its divisors is an integer number (10051005999987).

Almost surely, 2^{20102011999973} is an apocalyptic number.

It is an amenable number.

20102011999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102011999973 is an equidigital number, since it uses as much as digits as its factorization.

20102011999973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 53.

The spelling of 20102011999973 in words is "twenty trillion, one hundred two billion, eleven million, nine hundred ninety-nine thousand, nine hundred seventy-three".