2111231103221 has 16 divisors (see below), whose sum is σ = 2139793643520. Its totient is φ = 2082780501120.

The previous prime is 2111231103217. The next prime is 2111231103227. The reversal of 2111231103221 is 1223011321112.

It is a cyclic number.

It is not a de Polignac number, because 2111231103221 - 2² = 2111231103217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111231103193 and 2111231103202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111231103227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94042820 + ... + 94065266.

It is an arithmetic number, because the mean of its divisors is an integer number (133737102720).

Almost surely, 2^{2111231103221} is an apocalyptic number.

It is an amenable number.

2111231103221 is a deficient number, since it is larger than the sum of its proper divisors (28562540299).

2111231103221 is a wasteful number, since it uses less digits than its factorization.

2111231103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24884.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2111231103221 its reverse (1223011321112), we get a palindrome (3334242424333).

The spelling of 2111231103221 in words is "two trillion, one hundred eleven billion, two hundred thirty-one million, one hundred three thousand, two hundred twenty-one".