20020201011111 has 16 divisors (see below), whose sum is σ = 31129564256000. Its totient is φ = 11440114862904.

The previous prime is 20020201011079. The next prime is 20020201011113. The reversal of 20020201011111 is 11111010202002.

It is not a de Polignac number, because 20020201011111 - 2⁵ = 20020201011079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020201011113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9727987801 + ... + 9727989858.

It is an arithmetic number, because the mean of its divisors is an integer number (1945597766000).

Almost surely, 2^{20020201011111} is an apocalyptic number.

20020201011111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20020201011111 is a deficient number, since it is larger than the sum of its proper divisors (11109363244889).

20020201011111 is an equidigital number, since it uses as much as digits as its factorization.

20020201011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19455977683 (or 19455977669 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20020201011111 its reverse (11111010202002), we get a palindrome (31131211213113).

The spelling of 20020201011111 in words is "twenty trillion, twenty billion, two hundred one million, eleven thousand, one hundred eleven".