2011123030 has 128 divisors (see below), whose sum is σ = 4419360000. Its totient is φ = 644474880.

The previous prime is 2011123027. The next prime is 2011123061. The reversal of 2011123030 is 303211102.

It is a self number, because there is not a number n which added to its sum of digits gives 2011123030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13497396 + ... + 13497544.

It is an arithmetic number, because the mean of its divisors is an integer number (34526250).

Almost surely, 2^2011123030 is an apocalyptic number.

2011123030 is an abundant number, since it is smaller than the sum of its proper divisors (2408236970).

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

2011123030 is a wasteful number, since it uses less digits than its factorization.

2011123030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2011123030 is about 44845.5463786539. The cubic root of 2011123030 is about 1262.2524231717.

Adding to 2011123030 its reverse (303211102), we get a palindrome (2314334132).

The spelling of 2011123030 in words is "two billion, eleven million, one hundred twenty-three thousand, thirty".