12212011 has 16 divisors (see below), whose sum is σ = 14727168. Its totient is φ = 9900000.

The previous prime is 12211981. The next prime is 12212021. The reversal of 12212011 is 11021221.

It is a cyclic number.

It is not a de Polignac number, because 12212011 - 2⁹ = 12211499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15886 + ... + 16636.

It is an arithmetic number, because the mean of its divisors is an integer number (920448).

Almost surely, 2^12212011 is an apocalyptic number.

12212011 is a deficient number, since it is larger than the sum of its proper divisors (2515157).

12212011 is a wasteful number, since it uses less digits than its factorization.

12212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 12212011 is about 3494.5687859878. The cubic root of 12212011 is about 230.2832741571.

Adding to 12212011 its reverse (11021221), we get a palindrome (23233232).

The spelling of 12212011 in words is "twelve million, two hundred twelve thousand, eleven".