21000210000093 has 20 divisors (see below), whose sum is σ = 32452431804540. Its totient is φ = 13517376550272.

The previous prime is 21000210000037. The next prime is 21000210000097. The reversal of 21000210000093 is 39000001200012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17020352578329 + 3979857421764 = 4125573^2 + 1994958^2 .

It is not a de Polignac number, because 21000210000093 - 2¹⁷ = 21000209869021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000210000097) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4470029580 + ... + 4470034277.

It is an arithmetic number, because the mean of its divisors is an integer number (1622621590227).

Almost surely, 2^{21000210000093} is an apocalyptic number.

It is an amenable number.

21000210000093 is a deficient number, since it is larger than the sum of its proper divisors (11452221804447).

21000210000093 is an equidigital number, since it uses as much as digits as its factorization.

21000210000093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8940063898 (or 8940063889 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The spelling of 21000210000093 in words is "twenty-one trillion, two hundred ten million, ninety-three", and thus it is an aban number.