2111030113221 has 6 divisors (see below), whose sum is σ = 3049265719110. Its totient is φ = 1407353408808.

The previous prime is 2111030113163. The next prime is 2111030113253. The reversal of 2111030113221 is 1223110301112.

2111030113221 is a `hidden beast` number, since 21 + 110 + 301 + 13 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2094822022500 + 16208090721 = 1447350^2 + 127311^2 .

It is not a de Polignac number, because 2111030113221 - 2²² = 2111025918917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2111030113194 and 2111030113203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111030113021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117279450726 + ... + 117279450743.

It is an arithmetic number, because the mean of its divisors is an integer number (508210953185).

Almost surely, 2^{2111030113221} is an apocalyptic number.

It is an amenable number.

2111030113221 is a deficient number, since it is larger than the sum of its proper divisors (938235605889).

2111030113221 is a wasteful number, since it uses less digits than its factorization.

2111030113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234558901475 (or 234558901472 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2111030113221 its reverse (1223110301112), we get a palindrome (3334140414333).

The spelling of 2111030113221 in words is "two trillion, one hundred eleven billion, thirty million, one hundred thirteen thousand, two hundred twenty-one".