100706550021 has 48 divisors (see below), whose sum is σ = 188076016128. Its totient is φ = 52315081200.

The previous prime is 100706550011. The next prime is 100706550029. The reversal of 100706550021 is 120055607001.

100706550021 is a `hidden beast` number, since 1 + 0 + 0 + 7 + 0 + 655 + 0 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 100706550021 - 2¹¹ = 100706547973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100706550029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2672395 + ... + 2709816.

It is an arithmetic number, because the mean of its divisors is an integer number (3918250336).

Almost surely, 2^100706550021 is an apocalyptic number.

100706550021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100706550021 is a deficient number, since it is larger than the sum of its proper divisors (87369466107).

100706550021 is an equidigital number, since it uses as much as digits as its factorization.

100706550021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5382244 (or 5382232 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The spelling of 100706550021 in words is "one hundred billion, seven hundred six million, five hundred fifty thousand, twenty-one".