101111001993 has 12 divisors (see below), whose sum is σ = 149445719280. Its totient is φ = 65839721976.

The previous prime is 101111001991. The next prime is 101111002049. The reversal of 101111001993 is 399100111101.

It is not a de Polignac number, because 101111001993 - 2¹ = 101111001991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101111001991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130633983 + ... + 130634756.

It is an arithmetic number, because the mean of its divisors is an integer number (12453809940).

Almost surely, 2^101111001993 is an apocalyptic number.

It is an amenable number.

101111001993 is a deficient number, since it is larger than the sum of its proper divisors (48334717287).

101111001993 is a wasteful number, since it uses less digits than its factorization.

101111001993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261268788 (or 261268785 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 27.

The spelling of 101111001993 in words is "one hundred one billion, one hundred eleven million, one thousand, nine hundred ninety-three".