1000012112123 has 4 divisors (see below), whose sum is σ = 1009186535280. Its totient is φ = 990837688968.

The previous prime is 1000012112093. The next prime is 1000012112153. The reversal of 1000012112123 is 3212112100001.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1000012112093) and next prime (1000012112153).

It is a cyclic number.

It is not a de Polignac number, because 1000012112123 - 2⁶ = 1000012112059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000012112098 and 1000012112107.

It is not an unprimeable number, because it can be changed into a prime (1000012112153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4587211415 + ... + 4587211632.

It is an arithmetic number, because the mean of its divisors is an integer number (252296633820).

Almost surely, 2^{1000012112123} is an apocalyptic number.

1000012112123 is a deficient number, since it is larger than the sum of its proper divisors (9174423157).

1000012112123 is an equidigital number, since it uses as much as digits as its factorization.

1000012112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174423156.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1000012112123 its reverse (3212112100001), we get a palindrome (4212124212124).

The spelling of 1000012112123 in words is "one trillion, twelve million, one hundred twelve thousand, one hundred twenty-three".