111220001211 has 16 divisors (see below), whose sum is σ = 163345178880. Its totient is φ = 66751631520.

The previous prime is 111220001203. The next prime is 111220001227. The reversal of 111220001211 is 112100022111.

It is not a de Polignac number, because 111220001211 - 2³ = 111220001203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111220000211) 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, 16357296 + ... + 16364093.

It is an arithmetic number, because the mean of its divisors is an integer number (10209073680).

Almost surely, 2^111220001211 is an apocalyptic number.

111220001211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111220001211 is a deficient number, since it is larger than the sum of its proper divisors (52125177669).

111220001211 is a wasteful number, since it uses less digits than its factorization.

111220001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32721506.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111220001211 its reverse (112100022111), we get a palindrome (223320023322).

The spelling of 111220001211 in words is "one hundred eleven billion, two hundred twenty million, one thousand, two hundred eleven".