1002123012311 has 4 divisors (see below), whose sum is σ = 1008505961592. Its totient is φ = 995740063032.

The previous prime is 1002123012277. The next prime is 1002123012337. The reversal of 1002123012311 is 1132103212001.

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-1002123012311 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 1002123012311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002123012511) 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, 3191474405 + ... + 3191474718.

It is an arithmetic number, because the mean of its divisors is an integer number (252126490398).

Almost surely, 2^{1002123012311} is an apocalyptic number.

1002123012311 is a deficient number, since it is larger than the sum of its proper divisors (6382949281).

1002123012311 is an equidigital number, since it uses as much as digits as its factorization.

1002123012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382949280.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1002123012311 its reverse (1132103212001), we get a palindrome (2134226224312).

The spelling of 1002123012311 in words is "one trillion, two billion, one hundred twenty-three million, twelve thousand, three hundred eleven".