2032220021 has 4 divisors (see below), whose sum is σ = 2188544652. Its totient is φ = 1875895392.

The previous prime is 2032220011. The next prime is 2032220053. The reversal of 2032220021 is 1200222302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1200222302 = 2 ⋅600111151.

It can be written as a sum of positive squares in 2 ways, for example, as 1280637796 + 751582225 = 35786^2 + 27415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2032220021 - 2⁶ = 2032219957 is a prime.

It is a super-3 number, since 3×2032220021³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2032219978 and 2032220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2032220011) 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 3 ways as a sum of consecutive naturals, for example, 78162296 + ... + 78162321.

It is an arithmetic number, because the mean of its divisors is an integer number (547136163).

Almost surely, 2^2032220021 is an apocalyptic number.

It is an amenable number.

2032220021 is a deficient number, since it is larger than the sum of its proper divisors (156324631).

2032220021 is a wasteful number, since it uses less digits than its factorization.

2032220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156324630.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2032220021 is about 45080.1510756120. The cubic root of 2032220021 is about 1266.6508198002.

Adding to 2032220021 its reverse (1200222302), we get a palindrome (3232442323).

The spelling of 2032220021 in words is "two billion, thirty-two million, two hundred twenty thousand, twenty-one".