2111220201111 has 64 divisors (see below), whose sum is σ = 3372096946176. Its totient is φ = 1148764320000.

The previous prime is 2111220201089. The next prime is 2111220201121. The reversal of 2111220201111 is 1111020221112.

It is a happy number.

It is not a de Polignac number, because 2111220201111 - 2²¹ = 2111218103959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111220201121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 336660906 + ... + 336667176.

It is an arithmetic number, because the mean of its divisors is an integer number (52689014784).

Almost surely, 2^{2111220201111} is an apocalyptic number.

2111220201111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2111220201111 is a deficient number, since it is larger than the sum of its proper divisors (1260876745065).

2111220201111 is a wasteful number, since it uses less digits than its factorization.

2111220201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2111220201111 its reverse (1111020221112), we get a palindrome (3222240422223).

The spelling of 2111220201111 in words is "two trillion, one hundred eleven billion, two hundred twenty million, two hundred one thousand, one hundred eleven".