2111120221 has 32 divisors (see below), whose sum is σ = 2556748800. Its totient is φ = 1704917760.

The previous prime is 2111120173. The next prime is 2111120233. The reversal of 2111120221 is 1220211112.

It is not a de Polignac number, because 2111120221 - 2⁹ = 2111119709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111100221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2570991 + ... + 2571811.

It is an arithmetic number, because the mean of its divisors is an integer number (79898400).

Almost surely, 2^2111120221 is an apocalyptic number.

It is an amenable number.

2111120221 is a deficient number, since it is larger than the sum of its proper divisors (445628579).

2111120221 is a wasteful number, since it uses less digits than its factorization.

2111120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2111120221 is about 45946.9283086476. The cubic root of 2111120221 is about 1282.8355556555.

Adding to 2111120221 its reverse (1220211112), we get a palindrome (3331331333).

The spelling of 2111120221 in words is "two billion, one hundred eleven million, one hundred twenty thousand, two hundred twenty-one".