20201002011 has 6 divisors (see below), whose sum is σ = 29179225140. Its totient is φ = 13467334668.

The previous prime is 20201001983. The next prime is 20201002013. The reversal of 20201002011 is 11020010202.

It is not a de Polignac number, because 20201002011 - 2⁵ = 20201001979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2244555779 = 20201002011 / (2 + 0 + 2 + 0 + 1 + 0 + 0 + 2 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 20201001984 and 20201002002.

It is not an unprimeable number, because it can be changed into a prime (20201002013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122277881 + ... + 1122277898.

It is an arithmetic number, because the mean of its divisors is an integer number (4863204190).

Almost surely, 2^20201002011 is an apocalyptic number.

20201002011 is a deficient number, since it is larger than the sum of its proper divisors (8978223129).

20201002011 is a wasteful number, since it uses less digits than its factorization.

20201002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244555785 (or 2244555782 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20201002011 its reverse (11020010202), we get a palindrome (31221012213).

The spelling of 20201002011 in words is "twenty billion, two hundred one million, two thousand, eleven".