20111303312 has 20 divisors (see below), whose sum is σ = 41016474480. Its totient is φ = 9526406688.

The previous prime is 20111303209. The next prime is 20111303323. The reversal of 20111303312 is 21330311102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33077498 + ... + 33078105.

It is an arithmetic number, because the mean of its divisors is an integer number (2050823724).

Almost surely, 2^20111303312 is an apocalyptic number.

It is an amenable number.

20111303312 is an abundant number, since it is smaller than the sum of its proper divisors (20905171168).

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

20111303312 is a wasteful number, since it uses less digits than its factorization.

20111303312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66155630 (or 66155624 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20111303312 its reverse (21330311102), we get a palindrome (41441614414).

The spelling of 20111303312 in words is "twenty billion, one hundred eleven million, three hundred three thousand, three hundred twelve".