12210211122011 has 4 divisors (see below), whose sum is σ = 13954526996592. Its totient is φ = 10465895247432.

The previous prime is 12210211122001. The next prime is 12210211122017. The reversal of 12210211122011 is 11022111201221.

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 12210211122011 - 2²² = 12210206927707 is a prime.

It is a super-2 number, since 2×12210211122011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12210211122017) 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, 872157937280 + ... + 872157937293.

It is an arithmetic number, because the mean of its divisors is an integer number (3488631749148).

Almost surely, 2^{12210211122011} is an apocalyptic number.

12210211122011 is a deficient number, since it is larger than the sum of its proper divisors (1744315874581).

12210211122011 is an equidigital number, since it uses as much as digits as its factorization.

12210211122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744315874580.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12210211122011 its reverse (11022111201221), we get a palindrome (23232322323232).

The spelling of 12210211122011 in words is "twelve trillion, two hundred ten billion, two hundred eleven million, one hundred twenty-two thousand, eleven".