1012120012111 has 8 divisors (see below), whose sum is σ = 1090393209360. Its totient is φ = 933906502272.

The previous prime is 1012120012093. The next prime is 1012120012133. The reversal of 1012120012111 is 1112100212101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012120012111 - 2¹⁷ = 1012119881039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1012120012091 and 1012120012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012120018111) 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 7 ways as a sum of consecutive naturals, for example, 14886625 + ... + 14954458.

It is an arithmetic number, because the mean of its divisors is an integer number (136299151170).

Almost surely, 2^{1012120012111} is an apocalyptic number.

1012120012111 is a deficient number, since it is larger than the sum of its proper divisors (78273197249).

1012120012111 is a wasteful number, since it uses less digits than its factorization.

1012120012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29843705.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1012120012111 its reverse (1112100212101), we get a palindrome (2124220224212).

The spelling of 1012120012111 in words is "one trillion, twelve billion, one hundred twenty million, twelve thousand, one hundred eleven".