100011955 has 8 divisors (see below), whose sum is σ = 120076704. Its totient is φ = 79968000.

The previous prime is 100011943. The next prime is 100011959. The reversal of 100011955 is 559110001.

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

It is not a de Polignac number, because 100011955 - 2¹³ = 100003763 is a prime.

It is a super-2 number, since 2×100011955² = 20004782285844050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100011959) 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, 8835 + ... + 16675.

It is an arithmetic number, because the mean of its divisors is an integer number (15009588).

Almost surely, 2^100011955 is an apocalyptic number.

100011955 is a deficient number, since it is larger than the sum of its proper divisors (20064749).

100011955 is an equidigital number, since it uses as much as digits as its factorization.

100011955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10397.

The product of its (nonzero) digits is 225, while the sum is 22.

The square root of 100011955 is about 10000.5977321358. The cubic root of 100011955 is about 464.1773793557.

Adding to 100011955 its reverse (559110001), we get a palindrome (659121956).

The spelling of 100011955 in words is "one hundred million, eleven thousand, nine hundred fifty-five".