2302123221 has 16 divisors (see below), whose sum is σ = 3611174400. Its totient is φ = 1444469184.

The previous prime is 2302123189. The next prime is 2302123231. The reversal of 2302123221 is 1223212032.

2302123221 is a `hidden beast` number, since 230 + 212 + 3 + 221 = 666.

It is not a de Polignac number, because 2302123221 - 2⁵ = 2302123189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2302123194 and 2302123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2302123231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2507301 + ... + 2508218.

It is an arithmetic number, because the mean of its divisors is an integer number (225698400).

Almost surely, 2^2302123221 is an apocalyptic number.

It is an amenable number.

2302123221 is a deficient number, since it is larger than the sum of its proper divisors (1309051179).

2302123221 is a wasteful number, since it uses less digits than its factorization.

2302123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015545 (or 5015539 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2302123221 is about 47980.4462359407. The cubic root of 2302123221 is about 1320.4121801645.

Adding to 2302123221 its reverse (1223212032), we get a palindrome (3525335253).

The spelling of 2302123221 in words is "two billion, three hundred two million, one hundred twenty-three thousand, two hundred twenty-one".