2011123130121 has 24 divisors (see below), whose sum is σ = 3319988503104. Its totient is φ = 1149199644960.

The previous prime is 2011123130089. The next prime is 2011123130129. The reversal of 2011123130121 is 1210313211102.

2011123130121 is a `hidden beast` number, since 2 + 0 + 111 + 231 + 301 + 21 = 666.

It is not a de Polignac number, because 2011123130121 - 2⁵ = 2011123130089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011123130094 and 2011123130103.

It is not an unprimeable number, because it can be changed into a prime (2011123130129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7965595 + ... + 8214191.

It is an arithmetic number, because the mean of its divisors is an integer number (138332854296).

Almost surely, 2^{2011123130121} is an apocalyptic number.

2011123130121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2011123130121 is a deficient number, since it is larger than the sum of its proper divisors (1308865372983).

2011123130121 is a wasteful number, since it uses less digits than its factorization.

2011123130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377021 (or 377018 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2011123130121 its reverse (1210313211102), we get a palindrome (3221436341223).

The spelling of 2011123130121 in words is "two trillion, eleven billion, one hundred twenty-three million, one hundred thirty thousand, one hundred twenty-one".