21000011000193 has 24 divisors (see below), whose sum is σ = 30831217050816. Its totient is φ = 13770231112800.

The previous prime is 21000011000183. The next prime is 21000011000197. The reversal of 21000011000193 is 39100011000012.

It is not a de Polignac number, because 21000011000193 - 2²² = 21000006805889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000011000197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30150988 + ... + 30839618.

It is an arithmetic number, because the mean of its divisors is an integer number (1284634043784).

Almost surely, 2^{21000011000193} is an apocalyptic number.

It is an amenable number.

21000011000193 is a deficient number, since it is larger than the sum of its proper divisors (9831206050623).

21000011000193 is a wasteful number, since it uses less digits than its factorization.

21000011000193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744245 (or 744242 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The spelling of 21000011000193 in words is "twenty-one trillion, eleven million, one hundred ninety-three", and thus it is an aban number.