100012120011111 has 128 divisors (see below), whose sum is σ = 172046293235712. Its totient is φ = 50170383360000.

The previous prime is 100012120011019. The next prime is 100012120011113. The reversal of 100012120011111 is 111110021210001.

It is not a de Polignac number, because 100012120011111 - 2¹⁹ = 100012119486823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012120011113) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3666523005 + ... + 3666550281.

It is an arithmetic number, because the mean of its divisors is an integer number (1344111665904).

Almost surely, 2^{100012120011111} is an apocalyptic number.

100012120011111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100012120011111 is a deficient number, since it is larger than the sum of its proper divisors (72034173224601).

100012120011111 is a wasteful number, since it uses less digits than its factorization.

100012120011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31273.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 100012120011111 its reverse (111110021210001), we get a palindrome (211122141221112).

The spelling of 100012120011111 in words is "one hundred trillion, twelve billion, one hundred twenty million, eleven thousand, one hundred eleven".