20012010201111 has 4 divisors (see below), whose sum is σ = 26682680268152. Its totient is φ = 13341340134072.

The previous prime is 20012010201013. The next prime is 20012010201179. The reversal of 20012010201111 is 11110201021002.

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

It is not a de Polignac number, because 20012010201111 - 2⁹ = 20012010200599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012010201011) 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, 3335335033516 + ... + 3335335033521.

It is an arithmetic number, because the mean of its divisors is an integer number (6670670067038).

Almost surely, 2^{20012010201111} is an apocalyptic number.

20012010201111 is a deficient number, since it is larger than the sum of its proper divisors (6670670067041).

20012010201111 is an equidigital number, since it uses as much as digits as its factorization.

20012010201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670670067040.

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

Adding to 20012010201111 its reverse (11110201021002), we get a palindrome (31122211222113).

The spelling of 20012010201111 in words is "twenty trillion, twelve billion, ten million, two hundred one thousand, one hundred eleven".