11012211121111 has 8 divisors (see below), whose sum is σ = 11028479562464. Its totient is φ = 10995945760800.

The previous prime is 11012211121091. The next prime is 11012211121123. The reversal of 11012211121111 is 11112111221011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11012211121111 - 2⁷ = 11012211120983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012211122111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6433081 + ... + 7962973.

It is an arithmetic number, because the mean of its divisors is an integer number (1378559945308).

Almost surely, 2^{11012211121111} is an apocalyptic number.

11012211121111 is a deficient number, since it is larger than the sum of its proper divisors (16268441353).

11012211121111 is an equidigital number, since it uses as much as digits as its factorization.

11012211121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540521.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11012211121111 its reverse (11112111221011), we get a palindrome (22124322342122).

The spelling of 11012211121111 in words is "eleven trillion, twelve billion, two hundred eleven million, one hundred twenty-one thousand, one hundred eleven".