12213122011 has 8 divisors (see below), whose sum is σ = 12248749184. Its totient is φ = 12177527040.

The previous prime is 12213121981. The next prime is 12213122029. The reversal of 12213122011 is 11022131221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12213122011 - 2⁵ = 12213121979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213132011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895435 + ... + 908971.

It is an arithmetic number, because the mean of its divisors is an integer number (1531093648).

Almost surely, 2^12213122011 is an apocalyptic number.

12213122011 is a deficient number, since it is larger than the sum of its proper divisors (35627173).

12213122011 is a wasteful number, since it uses less digits than its factorization.

12213122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16101.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12213122011 its reverse (11022131221), we get a palindrome (23235253232).

The spelling of 12213122011 in words is "twelve billion, two hundred thirteen million, one hundred twenty-two thousand, eleven".