11012212122211 has 4 divisors (see below), whose sum is σ = 11012234459800. Its totient is φ = 11012189784624.

The previous prime is 11012212122209. The next prime is 11012212122259. The reversal of 11012212122211 is 11222121221011.

It is a happy number.

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 11012212122211 - 2¹ = 11012212122209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012212122311) 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, 10412226 + ... + 11420983.

It is an arithmetic number, because the mean of its divisors is an integer number (2753058614950).

Almost surely, 2^{11012212122211} is an apocalyptic number.

11012212122211 is a deficient number, since it is larger than the sum of its proper divisors (22337589).

11012212122211 is an equidigital number, since it uses as much as digits as its factorization.

11012212122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22337588.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11012212122211 its reverse (11222121221011), we get a palindrome (22234333343222).

The spelling of 11012212122211 in words is "eleven trillion, twelve billion, two hundred twelve million, one hundred twenty-two thousand, two hundred eleven".