111121220212211 has 32 divisors (see below), whose sum is σ = 122610903503616. Its totient is φ = 99866012400000.

The previous prime is 111121220212181. The next prime is 111121220212241. The reversal of 111121220212211 is 112212022121111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111121220212181) and next prime (111121220212241).

It is not a de Polignac number, because 111121220212211 - 2⁶ = 111121220212147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121220212241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1955401580 + ... + 1955458406.

It is an arithmetic number, because the mean of its divisors is an integer number (3831590734488).

Almost surely, 2^{111121220212211} is an apocalyptic number.

111121220212211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111121220212211 is a deficient number, since it is larger than the sum of its proper divisors (11489683291405).

111121220212211 is a wasteful number, since it uses less digits than its factorization.

111121220212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59603.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111121220212211 its reverse (112212022121111), we get a palindrome (223333242333322).

The spelling of 111121220212211 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, two hundred eleven".