20000011001111 has 4 divisors (see below), whose sum is σ = 20003799604800. Its totient is φ = 19996222397424.

The previous prime is 20000011001081. The next prime is 20000011001119. The reversal of 20000011001111 is 11110011000002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000011001111 is a prime.

It is a super-2 number, since 2×20000011001111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000011001119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894293926 + ... + 1894304483.

It is an arithmetic number, because the mean of its divisors is an integer number (5000949901200).

Almost surely, 2^{20000011001111} is an apocalyptic number.

20000011001111 is a deficient number, since it is larger than the sum of its proper divisors (3788603689).

20000011001111 is an equidigital number, since it uses as much as digits as its factorization.

20000011001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788603688.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 20000011001111 its reverse (11110011000002), we get a palindrome (31110022001113).

The spelling of 20000011001111 in words is "twenty trillion, eleven million, one thousand, one hundred eleven".