11112021211 has 16 divisors (see below), whose sum is σ = 11778531840. Its totient is φ = 10461306240.

The previous prime is 11112021209. The next prime is 11112021227. The reversal of 11112021211 is 11212021111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11112021211 - 2¹ = 11112021209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11112021191 and 11112021200.

It is not an unprimeable number, because it can be changed into a prime (11112021281) 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, 1005331 + ... + 1016323.

It is an arithmetic number, because the mean of its divisors is an integer number (736158240).

Almost surely, 2^11112021211 is an apocalyptic number.

11112021211 is a deficient number, since it is larger than the sum of its proper divisors (666510629).

11112021211 is a wasteful number, since it uses less digits than its factorization.

11112021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11706.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11112021211 its reverse (11212021111), we get a palindrome (22324042322).

The spelling of 11112021211 in words is "eleven billion, one hundred twelve million, twenty-one thousand, two hundred eleven".