2061230221 has 4 divisors (see below), whose sum is σ = 2080140700. Its totient is φ = 2042319744.

The previous prime is 2061230191. The next prime is 2061230239. The reversal of 2061230221 is 1220321602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1395022500 + 666207721 = 37350^2 + 25811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061230221 - 2¹¹ = 2061228173 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 (2061230921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9455076 + ... + 9455293.

It is an arithmetic number, because the mean of its divisors is an integer number (520035175).

Almost surely, 2^2061230221 is an apocalyptic number.

It is an amenable number.

2061230221 is a deficient number, since it is larger than the sum of its proper divisors (18910479).

2061230221 is a wasteful number, since it uses less digits than its factorization.

2061230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18910478.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2061230221 is about 45400.7733524441. The cubic root of 2061230221 is about 1272.6495660892.

Adding to 2061230221 its reverse (1220321602), we get a palindrome (3281551823).

The spelling of 2061230221 in words is "two billion, sixty-one million, two hundred thirty thousand, two hundred twenty-one".