100000011212111 has 4 divisors (see below), whose sum is σ = 100000092858072. Its totient is φ = 99999929566152.

The previous prime is 100000011212077. The next prime is 100000011212113. The reversal of 100000011212111 is 111212110000001.

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 100000011212111 - 2³⁸ = 99725133305167 is a prime.

It is a super-2 number, since 2×100000011212111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100000011212092 and 100000011212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000011212113) 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, 38957360 + ... + 41444853.

It is an arithmetic number, because the mean of its divisors is an integer number (25000023214518).

Almost surely, 2^{100000011212111} is an apocalyptic number.

100000011212111 is a deficient number, since it is larger than the sum of its proper divisors (81645961).

100000011212111 is an equidigital number, since it uses as much as digits as its factorization.

100000011212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81645960.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100000011212111 its reverse (111212110000001), we get a palindrome (211212121212112).

The spelling of 100000011212111 in words is "one hundred trillion, eleven million, two hundred twelve thousand, one hundred eleven".