12012201011 has 4 divisors (see below), whose sum is σ = 12122404800. Its totient is φ = 11901997224.

The previous prime is 12012201001. The next prime is 12012201023. The reversal of 12012201011 is 11010221021.

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 12012201011 - 2¹⁸ = 12011938867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012200983 and 12012201001.

It is not an unprimeable number, because it can be changed into a prime (12012201001) 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, 55101731 + ... + 55101948.

It is an arithmetic number, because the mean of its divisors is an integer number (3030601200).

Almost surely, 2^12012201011 is an apocalyptic number.

12012201011 is a deficient number, since it is larger than the sum of its proper divisors (110203789).

12012201011 is a wasteful number, since it uses less digits than its factorization.

12012201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110203788.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12012201011 its reverse (11010221021), we get a palindrome (23022422032).

The spelling of 12012201011 in words is "twelve billion, twelve million, two hundred one thousand, eleven".