100011105100561 has 4 divisors (see below), whose sum is σ = 100011454949952. Its totient is φ = 100010755251172.

The previous prime is 100011105100519. The next prime is 100011105100597. The reversal of 100011105100561 is 165001501110001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100011105100561 is a prime.

It is a super-2 number, since 2×100011105100561² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100011105101561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174495541 + ... + 175067746.

It is an arithmetic number, because the mean of its divisors is an integer number (25002863737488).

Almost surely, 2^{100011105100561} is an apocalyptic number.

It is an amenable number.

100011105100561 is a deficient number, since it is larger than the sum of its proper divisors (349849391).

100011105100561 is an equidigital number, since it uses as much as digits as its factorization.

100011105100561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349849390.

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 100011105100561 its reverse (165001501110001), we get a palindrome (265012606210562).

The spelling of 100011105100561 in words is "one hundred trillion, eleven billion, one hundred five million, one hundred thousand, five hundred sixty-one".