12020202111 has 4 divisors (see below), whose sum is σ = 16026936152. Its totient is φ = 8013468072.

The previous prime is 12020202097. The next prime is 12020202127. The reversal of 12020202111 is 11120202021.

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

It is not a de Polignac number, because 12020202111 - 2⁵ = 12020202079 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 (12020202191) 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, 2003367016 + ... + 2003367021.

It is an arithmetic number, because the mean of its divisors is an integer number (4006734038).

Almost surely, 2^12020202111 is an apocalyptic number.

12020202111 is a deficient number, since it is larger than the sum of its proper divisors (4006734041).

12020202111 is an equidigital number, since it uses as much as digits as its factorization.

12020202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006734040.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12020202111 its reverse (11120202021), we get a palindrome (23140404132).

It can be divided in two parts, 120202021 and 11, that multiplied together give a palindrome (1322222231).

The spelling of 12020202111 in words is "twelve billion, twenty million, two hundred two thousand, one hundred eleven".