1000111012123 has 8 divisors (see below), whose sum is σ = 1023286041648. Its totient is φ = 977192060544.

The previous prime is 1000111012111. The next prime is 1000111012139. The reversal of 1000111012123 is 3212101110001.

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 a de Polignac number, because none of the positive numbers 2^k-1000111012123 is a prime.

It is a super-3 number, since 3×1000111012123³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000111012193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64011586 + ... + 64027207.

It is an arithmetic number, because the mean of its divisors is an integer number (127910755206).

Almost surely, 2^{1000111012123} is an apocalyptic number.

1000111012123 is a deficient number, since it is larger than the sum of its proper divisors (23175029525).

1000111012123 is a wasteful number, since it uses less digits than its factorization.

1000111012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128038973.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1000111012123 its reverse (3212101110001), we get a palindrome (4212212122124).

The spelling of 1000111012123 in words is "one trillion, one hundred eleven million, twelve thousand, one hundred twenty-three".