2111022120221 has 16 divisors (see below), whose sum is σ = 2424377240064. Its totient is φ = 1800626049024.

The previous prime is 2111022120169. The next prime is 2111022120227. The reversal of 2111022120221 is 1220212201112.

It is a cyclic number.

It is not a de Polignac number, because 2111022120221 - 2¹⁴ = 2111022103837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2111022120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111022120227) 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, 1243196 + ... + 2401578.

It is an arithmetic number, because the mean of its divisors is an integer number (151523577504).

Almost surely, 2^{2111022120221} is an apocalyptic number.

It is an amenable number.

2111022120221 is a deficient number, since it is larger than the sum of its proper divisors (313355119843).

2111022120221 is a wasteful number, since it uses less digits than its factorization.

2111022120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159660.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2111022120221 its reverse (1220212201112), we get a palindrome (3331234321333).

The spelling of 2111022120221 in words is "two trillion, one hundred eleven billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".