2011312001123 has 2 divisors, whose sum is σ = 2011312001124. Its totient is φ = 2011312001122.

The previous prime is 2011312001099. The next prime is 2011312001227. The reversal of 2011312001123 is 3211002131102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011312001123 - 2⁶ = 2011312001059 is a prime.

It is a super-2 number, since 2×2011312001123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2011312001423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005656000561 + 1005656000562.

It is an arithmetic number, because the mean of its divisors is an integer number (1005656000562).

Almost surely, 2^{2011312001123} is an apocalyptic number.

2011312001123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011312001123 is an equidigital number, since it uses as much as digits as its factorization.

2011312001123 is an evil number, because the sum of its binary digits is even.

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

Adding to 2011312001123 its reverse (3211002131102), we get a palindrome (5222314132225).

The spelling of 2011312001123 in words is "two trillion, eleven billion, three hundred twelve million, one thousand, one hundred twenty-three".