2001123030 has 16 divisors (see below), whose sum is σ = 4802695344. Its totient is φ = 533632800.

The previous prime is 2001123013. The next prime is 2001123031. The reversal of 2001123030 is 303211002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2001122997 and 2001123015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001123031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33352021 + ... + 33352080.

It is an arithmetic number, because the mean of its divisors is an integer number (300168459).

Almost surely, 2^2001123030 is an apocalyptic number.

2001123030 is an abundant number, since it is smaller than the sum of its proper divisors (2801572314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001123030 is a wasteful number, since it uses less digits than its factorization.

2001123030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66704111.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2001123030 is about 44733.9136450188. The cubic root of 2001123030 is about 1260.1568272923.

Adding to 2001123030 its reverse (303211002), we get a palindrome (2304334032).

The spelling of 2001123030 in words is "two billion, one million, one hundred twenty-three thousand, thirty".