222032021 has 4 divisors (see below), whose sum is σ = 222186912. Its totient is φ = 221877132.

The previous prime is 222032017. The next prime is 222032023. The reversal of 222032021 is 120230222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222032021 - 2² = 222032017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222031987 and 222032005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222032023) 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, 75275 + ... + 78168.

It is an arithmetic number, because the mean of its divisors is an integer number (55546728).

Almost surely, 2^222032021 is an apocalyptic number.

It is an amenable number.

222032021 is a deficient number, since it is larger than the sum of its proper divisors (154891).

222032021 is a wasteful number, since it uses less digits than its factorization.

222032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154890.

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

The square root of 222032021 is about 14900.7389414082. The cubic root of 222032021 is about 605.5340056723.

Adding to 222032021 its reverse (120230222), we get a palindrome (342262243).

The spelling of 222032021 in words is "two hundred twenty-two million, thirty-two thousand, twenty-one".