11112120021211 has 16 divisors (see below), whose sum is σ = 12891879020160. Its totient is φ = 9471584551680.

The previous prime is 11112120021199. The next prime is 11112120021241. The reversal of 11112120021211 is 11212002121111.

It is a cyclic number.

It is not a de Polignac number, because 11112120021211 - 2⁷ = 11112120021083 is a prime.

It is a super-2 number, since 2×11112120021211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11112120021241) 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, 274041781 + ... + 274082326.

It is an arithmetic number, because the mean of its divisors is an integer number (805742438760).

Almost surely, 2^{11112120021211} is an apocalyptic number.

11112120021211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11112120021211 is a deficient number, since it is larger than the sum of its proper divisors (1779758998949).

11112120021211 is a wasteful number, since it uses less digits than its factorization.

11112120021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548124234.

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

Adding to 11112120021211 its reverse (11212002121111), we get a palindrome (22324122142322).

It can be divided in two parts, 11 and 112120021211, that multiplied together give a palindrome (1233320233321).

The spelling of 11112120021211 in words is "eleven trillion, one hundred twelve billion, one hundred twenty million, twenty-one thousand, two hundred eleven".