100012120011 has 60 divisors (see below), whose sum is σ = 161310104560. Its totient is φ = 61723088640.

The previous prime is 100012120001. The next prime is 100012120031. The reversal of 100012120011 is 110021210001.

It is a happy number.

It is not a de Polignac number, because 100012120011 - 2⁵ = 100012119979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100012119975 and 100012120002.

It is not an unprimeable number, because it can be changed into a prime (100012120001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1392930 + ... + 1462968.

Almost surely, 2^100012120011 is an apocalyptic number.

100012120011 is a deficient number, since it is larger than the sum of its proper divisors (61297984549).

100012120011 is an equidigital number, since it uses as much as digits as its factorization.

100012120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70146 (or 70120 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100012120011 its reverse (110021210001), we get a palindrome (210033330012).

The spelling of 100012120011 in words is "one hundred billion, twelve million, one hundred twenty thousand, eleven".