1000000012111 has 16 divisors (see below), whose sum is σ = 1017609062400. Its totient is φ = 982528034400.

The previous prime is 1000000012097. The next prime is 1000000012127. The reversal of 1000000012111 is 1112100000001.

It is a cyclic number.

It is not a de Polignac number, because 1000000012111 - 2²¹ = 999997914959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000000012094 and 1000000012103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000012211) 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 15 ways as a sum of consecutive naturals, for example, 38521186 + ... + 38547136.

It is an arithmetic number, because the mean of its divisors is an integer number (63600566400).

Almost surely, 2^{1000000012111} is an apocalyptic number.

1000000012111 is a deficient number, since it is larger than the sum of its proper divisors (17609050289).

1000000012111 is a wasteful number, since it uses less digits than its factorization.

1000000012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28566.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1000000012111 its reverse (1112100000001), we get a palindrome (2112100012112).

The spelling of 1000000012111 in words is "one trillion, twelve thousand, one hundred eleven".