12210212011 has 4 divisors (see below), whose sum is σ = 12212412472. Its totient is φ = 12208011552.

The previous prime is 12210211961. The next prime is 12210212029. The reversal of 12210212011 is 11021201221.

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 12210212011 - 2⁷ = 12210211883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210211982 and 12210212000.

It is not an unprimeable number, because it can be changed into a prime (12210212111) 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, 1091886 + ... + 1103011.

It is an arithmetic number, because the mean of its divisors is an integer number (3053103118).

Almost surely, 2^12210212011 is an apocalyptic number.

12210212011 is a deficient number, since it is larger than the sum of its proper divisors (2200461).

12210212011 is an equidigital number, since it uses as much as digits as its factorization.

12210212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200460.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12210212011 its reverse (11021201221), we get a palindrome (23231413232).

The spelling of 12210212011 in words is "twelve billion, two hundred ten million, two hundred twelve thousand, eleven".