12201023011 has 4 divisors (see below), whose sum is σ = 12206692152. Its totient is φ = 12195353872.

The previous prime is 12201022979. The next prime is 12201023053. The reversal of 12201023011 is 11032010221.

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

It is a cyclic number.

It is not a de Polignac number, because 12201023011 - 2⁵ = 12201022979 is a prime.

It is a super-2 number, since 2×12201023011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201022982 and 12201023000.

It is not an unprimeable number, because it can be changed into a prime (12201021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831341 + ... + 2835646.

It is an arithmetic number, because the mean of its divisors is an integer number (3051673038).

Almost surely, 2^12201023011 is an apocalyptic number.

12201023011 is a deficient number, since it is larger than the sum of its proper divisors (5669141).

12201023011 is an equidigital number, since it uses as much as digits as its factorization.

12201023011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5669140.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12201023011 its reverse (11032010221), we get a palindrome (23233033232).

The spelling of 12201023011 in words is "twelve billion, two hundred one million, twenty-three thousand, eleven".