20201111012 has 6 divisors (see below), whose sum is σ = 35351944278. Its totient is φ = 10100555504.

The previous prime is 20201110987. The next prime is 20201111089. The reversal of 20201111012 is 21011110202.

It can be written as a sum of positive squares in only one way, i.e., 17301719296 + 2899391716 = 131536^2 + 53846^2 .

It is a super-2 number, since 2×20201111012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20201110984 and 20201111002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525138873 + ... + 2525138880.

It is an arithmetic number, because the mean of its divisors is an integer number (5891990713).

Almost surely, 2^20201111012 is an apocalyptic number.

It is an amenable number.

20201111012 is a deficient number, since it is larger than the sum of its proper divisors (15150833266).

20201111012 is a wasteful number, since it uses less digits than its factorization.

20201111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050277757 (or 5050277755 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20201111012 its reverse (21011110202), we get a palindrome (41212221214).

The spelling of 20201111012 in words is "twenty billion, two hundred one million, one hundred eleven thousand, twelve".