100206621140621 has 8 divisors (see below), whose sum is σ = 100452034707000. Its totient is φ = 99961209573120.

The previous prime is 100206621140531. The next prime is 100206621140627. The reversal of 100206621140621 is 126041126602001.

It can be written as a sum of positive squares in 4 ways, for example, as 570070300900 + 99636550839721 = 755030^2 + 9981811^2 .

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 100206621140621 - 2³⁰ = 100205547398797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100206621140627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176547401 + ... + 177114081.

It is an arithmetic number, because the mean of its divisors is an integer number (12556504338375).

Almost surely, 2^{100206621140621} is an apocalyptic number.

It is an amenable number.

100206621140621 is a deficient number, since it is larger than the sum of its proper divisors (245413566379).

100206621140621 is an equidigital number, since it uses as much as digits as its factorization.

100206621140621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999439.

The product of its (nonzero) digits is 6912, while the sum is 32.

Adding to 100206621140621 its reverse (126041126602001), we get a palindrome (226247747742622).

The spelling of 100206621140621 in words is "one hundred trillion, two hundred six billion, six hundred twenty-one million, one hundred forty thousand, six hundred twenty-one".