2042232221 has 4 divisors (see below), whose sum is σ = 2062452444. Its totient is φ = 2022012000.

The previous prime is 2042232211. The next prime is 2042232223. The reversal of 2042232221 is 1222322402.

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 1435348996 + 606883225 = 37886^2 + 24635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2042232221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2042232193 and 2042232202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042232223) 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, 10109960 + ... + 10110161.

It is an arithmetic number, because the mean of its divisors is an integer number (515613111).

Almost surely, 2^2042232221 is an apocalyptic number.

It is an amenable number.

2042232221 is a deficient number, since it is larger than the sum of its proper divisors (20220223).

2042232221 is a wasteful number, since it uses less digits than its factorization.

2042232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20220222.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2042232221 is about 45191.0635081760. The cubic root of 2042232221 is about 1268.7275620095.

Adding to 2042232221 its reverse (1222322402), we get a palindrome (3264554623).

The spelling of 2042232221 in words is "two billion, forty-two million, two hundred thirty-two thousand, two hundred twenty-one".