102011999993 has 2 divisors, whose sum is σ = 102011999994. Its totient is φ = 102011999992.

The previous prime is 102011999963. The next prime is 102012000019. The reversal of 102011999993 is 399999110201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69470726329 + 32541273664 = 263573^2 + 180392^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011999993 - 2⁸ = 102011999737 is a prime.

It is not a weakly prime, because it can be changed into another prime (102011999953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005999996 + 51005999997.

It is an arithmetic number, because the mean of its divisors is an integer number (51005999997).

Almost surely, 2^102011999993 is an apocalyptic number.

It is an amenable number.

102011999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

102011999993 is an equidigital number, since it uses as much as digits as its factorization.

102011999993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 354294, while the sum is 53.

The spelling of 102011999993 in words is "one hundred two billion, eleven million, nine hundred ninety-nine thousand, nine hundred ninety-three".