1000012101111 has 6 divisors (see below), whose sum is σ = 1444461923840. Its totient is φ = 666674734068.

The previous prime is 1000012101107. The next prime is 1000012101113. The reversal of 1000012101111 is 1111012100001.

It is not a de Polignac number, because 1000012101111 - 2² = 1000012101107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 111112455679 = 1000012101111 / (1 + 0 + 0 + 0 + 0 + 1 + 2 + 1 + 0 + 1 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000012101093 and 1000012101102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000012101113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55556227831 + ... + 55556227848.

Almost surely, 2^{1000012101111} is an apocalyptic number.

1000012101111 is a deficient number, since it is larger than the sum of its proper divisors (444449822729).

1000012101111 is a wasteful number, since it uses less digits than its factorization.

1000012101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111112455685 (or 111112455682 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1000012101111 its reverse (1111012100001), we get a palindrome (2111024201112).

The spelling of 1000012101111 in words is "one trillion, twelve million, one hundred one thousand, one hundred eleven".