111220022221211 has 4 divisors (see below), whose sum is σ = 111220048092672. Its totient is φ = 111219996349752.

The previous prime is 111220022221109. The next prime is 111220022221291. The reversal of 111220022221211 is 112122220022111.

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 111220022221211 - 2¹⁴ = 111220022204827 is a prime.

It is a super-4 number, since 4×111220022221211⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111220022221291) 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, 4768436 + ... + 15658161.

It is an arithmetic number, because the mean of its divisors is an integer number (27805012023168).

Almost surely, 2^{111220022221211} is an apocalyptic number.

111220022221211 is a deficient number, since it is larger than the sum of its proper divisors (25871461).

111220022221211 is an equidigital number, since it uses as much as digits as its factorization.

111220022221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25871460.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111220022221211 its reverse (112122220022111), we get a palindrome (223342242243322).

The spelling of 111220022221211 in words is "one hundred eleven trillion, two hundred twenty billion, twenty-two million, two hundred twenty-one thousand, two hundred eleven".