1012130212123 has 4 divisors (see below), whose sum is σ = 1024941987040. Its totient is φ = 999318437208.

The previous prime is 1012130212103. The next prime is 1012130212153. The reversal of 1012130212123 is 3212120312101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012130212123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012130212123.

It is not an unprimeable number, because it can be changed into a prime (1012130212103) 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 3 ways as a sum of consecutive naturals, for example, 6405887340 + ... + 6405887497.

It is an arithmetic number, because the mean of its divisors is an integer number (256235496760).

Almost surely, 2^{1012130212123} is an apocalyptic number.

1012130212123 is a deficient number, since it is larger than the sum of its proper divisors (12811774917).

1012130212123 is an equidigital number, since it uses as much as digits as its factorization.

1012130212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12811774916.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1012130212123 its reverse (3212120312101), we get a palindrome (4224250524224).

The spelling of 1012130212123 in words is "one trillion, twelve billion, one hundred thirty million, two hundred twelve thousand, one hundred twenty-three".