100101111010101 has 12 divisors (see below), whose sum is σ = 153095816839212. Its totient is φ = 62808540241536.

The previous prime is 100101111010091. The next prime is 100101111010123. The reversal of 100101111010101 is 101010111101001.

It can be written as a sum of positive squares in 2 ways, for example, as 88558451302500 + 11542659707601 = 9410550^2 + 3397449^2 .

It is not a de Polignac number, because 100101111010101 - 2³⁷ = 99963672056629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101111010181) 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, 327127813606 + ... + 327127813911.

It is an arithmetic number, because the mean of its divisors is an integer number (12757984736601).

Almost surely, 2^{100101111010101} is an apocalyptic number.

It is an amenable number.

100101111010101 is a deficient number, since it is larger than the sum of its proper divisors (52994705829111).

100101111010101 is a wasteful number, since it uses less digits than its factorization.

100101111010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654255627540 (or 654255627537 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 100101111010101 its reverse (101010111101001), we get a palindrome (201111222111102).

The spelling of 100101111010101 in words is "one hundred trillion, one hundred one billion, one hundred eleven million, ten thousand, one hundred one".