102020111993 has 8 divisors (see below), whose sum is σ = 102161448288. Its totient is φ = 101878871584.

The previous prime is 102020111987. The next prime is 102020112041. The reversal of 102020111993 is 399111020201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102020111993 - 2⁶ = 102020111929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102020111923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2252630 + ... + 2297472.

It is an arithmetic number, because the mean of its divisors is an integer number (12770181036).

Almost surely, 2^102020111993 is an apocalyptic number.

It is an amenable number.

102020111993 is a deficient number, since it is larger than the sum of its proper divisors (141336295).

102020111993 is a wasteful number, since it uses less digits than its factorization.

102020111993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47943.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 102020111993 in words is "one hundred two billion, twenty million, one hundred eleven thousand, nine hundred ninety-three".