20012020111 has 8 divisors (see below), whose sum is σ = 20704587120. Its totient is φ = 19319619648.

The previous prime is 20012020109. The next prime is 20012020121. The reversal of 20012020111 is 11102021002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012020111 - 2¹ = 20012020109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012020121) 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, 233820 + ... + 307726.

It is an arithmetic number, because the mean of its divisors is an integer number (2588073390).

Almost surely, 2^20012020111 is an apocalyptic number.

20012020111 is a deficient number, since it is larger than the sum of its proper divisors (692567009).

20012020111 is an equidigital number, since it uses as much as digits as its factorization.

20012020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83273.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20012020111 its reverse (11102021002), we get a palindrome (31114041113).

The spelling of 20012020111 in words is "twenty billion, twelve million, twenty thousand, one hundred eleven".