12020122011 has 4 divisors (see below), whose sum is σ = 16026829352. Its totient is φ = 8013414672.

The previous prime is 12020121989. The next prime is 12020122021. The reversal of 12020122011 is 11022102021.

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

It is not a de Polignac number, because 12020122011 - 2³³ = 3430187419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020122021) 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, 2003353666 + ... + 2003353671.

It is an arithmetic number, because the mean of its divisors is an integer number (4006707338).

Almost surely, 2^12020122011 is an apocalyptic number.

12020122011 is a deficient number, since it is larger than the sum of its proper divisors (4006707341).

12020122011 is an equidigital number, since it uses as much as digits as its factorization.

12020122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006707340.

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

Adding to 12020122011 its reverse (11022102021), we get a palindrome (23042224032).

The spelling of 12020122011 in words is "twelve billion, twenty million, one hundred twenty-two thousand, eleven".