20200111011 has 12 divisors (see below), whose sum is σ = 29179296120. Its totient is φ = 13466113920.

The previous prime is 20200111007. The next prime is 20200111013. The reversal of 20200111011 is 11011100202.

It is a happy number.

It is not a de Polignac number, because 20200111011 - 2² = 20200111007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20200110984 and 20200111002.

It is not an unprimeable number, because it can be changed into a prime (20200111013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235060 + ... + 309278.

It is an arithmetic number, because the mean of its divisors is an integer number (2431608010).

Almost surely, 2^20200111011 is an apocalyptic number.

20200111011 is a deficient number, since it is larger than the sum of its proper divisors (8979185109).

20200111011 is a wasteful number, since it uses less digits than its factorization.

20200111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104466 (or 104463 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20200111011 its reverse (11011100202), we get a palindrome (31211211213).

The spelling of 20200111011 in words is "twenty billion, two hundred million, one hundred eleven thousand, eleven".