20011332012 has 24 divisors (see below), whose sum is σ = 53363552256. Its totient is φ = 5717523408.

The previous prime is 20011331993. The next prime is 20011332017. The reversal of 20011332012 is 21023311002.

It is a junction number, because it is equal to n+sod(n) for n = 20011331982 and 20011332000.

It is not an unprimeable number, because it can be changed into a prime (20011332017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119114988 + ... + 119115155.

It is an arithmetic number, because the mean of its divisors is an integer number (2223481344).

Almost surely, 2^20011332012 is an apocalyptic number.

It is an amenable number.

20011332012 is an abundant number, since it is smaller than the sum of its proper divisors (33352220244).

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

20011332012 is a wasteful number, since it uses less digits than its factorization.

20011332012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238230157 (or 238230155 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20011332012 its reverse (21023311002), we get a palindrome (41034643014).

The spelling of 20011332012 in words is "twenty billion, eleven million, three hundred thirty-two thousand, twelve".