20033020111 has 4 divisors (see below), whose sum is σ = 21574021672. Its totient is φ = 18492018552.

The previous prime is 20033020103. The next prime is 20033020121. The reversal of 20033020111 is 11102033002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20033020111 - 2³ = 20033020103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1541001547 = 20033020111 / (2 + 0 + 0 + 3 + 3 + 0 + 2 + 0 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20033020091 and 20033020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033020121) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 770500761 + ... + 770500786.

It is an arithmetic number, because the mean of its divisors is an integer number (5393505418).

Almost surely, 2^20033020111 is an apocalyptic number.

20033020111 is a deficient number, since it is larger than the sum of its proper divisors (1541001561).

20033020111 is a wasteful number, since it uses less digits than its factorization.

20033020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541001560.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20033020111 its reverse (11102033002), we get a palindrome (31135053113).

The spelling of 20033020111 in words is "twenty billion, thirty-three million, twenty thousand, one hundred eleven".