100511005501111 has 4 divisors (see below), whose sum is σ = 100522137529800. Its totient is φ = 100499873472424.

The previous prime is 100511005501087. The next prime is 100511005501129. The reversal of 100511005501111 is 111105500115001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100511005501111 - 2²³ = 100510997112503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100511005301111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5566000801 + ... + 5566018858.

It is an arithmetic number, because the mean of its divisors is an integer number (25130534382450).

Almost surely, 2^{100511005501111} is an apocalyptic number.

100511005501111 is a deficient number, since it is larger than the sum of its proper divisors (11132028689).

100511005501111 is an equidigital number, since it uses as much as digits as its factorization.

100511005501111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11132028688.

The product of its (nonzero) digits is 125, while the sum is 22.

Adding to 100511005501111 its reverse (111105500115001), we get a palindrome (211616505616112).

The spelling of 100511005501111 in words is "one hundred trillion, five hundred eleven billion, five million, five hundred one thousand, one hundred eleven".