2011201230123 has 8 divisors (see below), whose sum is σ = 2979557378000. Its totient is φ = 1340800820064.

The previous prime is 2011201230079. The next prime is 2011201230139. The reversal of 2011201230123 is 3210321021102.

It is not a de Polignac number, because 2011201230123 - 2¹⁰ = 2011201229099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011201230096 and 2011201230105.

It is not an unprimeable number, because it can be changed into a prime (2011201230163) 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, 37244467198 + ... + 37244467251.

It is an arithmetic number, because the mean of its divisors is an integer number (372444672250).

Almost surely, 2^{2011201230123} is an apocalyptic number.

2011201230123 is a deficient number, since it is larger than the sum of its proper divisors (968356147877).

2011201230123 is an equidigital number, since it uses as much as digits as its factorization.

2011201230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74488934458 (or 74488934452 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2011201230123 its reverse (3210321021102), we get a palindrome (5221522251225).

The spelling of 2011201230123 in words is "two trillion, eleven billion, two hundred one million, two hundred thirty thousand, one hundred twenty-three".