100520111 has 4 divisors (see below), whose sum is σ = 102857832. Its totient is φ = 98182392.

The previous prime is 100520107. The next prime is 100520137. The reversal of 100520111 is 111025001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111025001 = 6977 ⋅15913.

It is a cyclic number.

It is not a de Polignac number, because 100520111 - 2² = 100520107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100520092 and 100520101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100520141) 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, 1168796 + ... + 1168881.

It is an arithmetic number, because the mean of its divisors is an integer number (25714458).

Almost surely, 2^100520111 is an apocalyptic number.

100520111 is a deficient number, since it is larger than the sum of its proper divisors (2337721).

100520111 is an equidigital number, since it uses as much as digits as its factorization.

100520111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337720.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 100520111 is about 10025.9718232199. The cubic root of 100520111 is about 464.9622060469.

Adding to 100520111 its reverse (111025001), we get a palindrome (211545112).

The spelling of 100520111 in words is "one hundred million, five hundred twenty thousand, one hundred eleven".