100561011 has 8 divisors (see below), whose sum is σ = 135588240. Its totient is φ = 66287232.

The previous prime is 100561007. The next prime is 100561031. The reversal of 100561011 is 110165001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100561011 - 2² = 100561007 is a prime.

It is a super-2 number, since 2×100561011² = 20225033866684242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100561031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188050 + ... + 188583.

It is an arithmetic number, because the mean of its divisors is an integer number (16948530).

Almost surely, 2^100561011 is an apocalyptic number.

100561011 is a deficient number, since it is larger than the sum of its proper divisors (35027229).

100561011 is an equidigital number, since it uses as much as digits as its factorization.

100561011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376725.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 100561011 is about 10028.0113183023. The cubic root of 100561011 is about 465.0252593516.

The spelling of 100561011 in words is "one hundred million, five hundred sixty-one thousand, eleven".