20111121230 has 32 divisors (see below), whose sum is σ = 36389455200. Its totient is φ = 8002437120.

The previous prime is 20111121211. The next prime is 20111121241. The reversal of 20111121230 is 3212111102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2079446 + ... + 2089094.

It is an arithmetic number, because the mean of its divisors is an integer number (1137170475).

Almost surely, 2^20111121230 is an apocalyptic number.

20111121230 is a deficient number, since it is larger than the sum of its proper divisors (16278333970).

20111121230 is a wasteful number, since it uses less digits than its factorization.

20111121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10724.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20111121230 its reverse (3212111102), we get a palindrome (23323232332).

The spelling of 20111121230 in words is "twenty billion, one hundred eleven million, one hundred twenty-one thousand, two hundred thirty".