2216230421 has 8 divisors (see below), whose sum is σ = 2227095000. Its totient is φ = 2205387520.

The previous prime is 2216230417. The next prime is 2216230451. The reversal of 2216230421 is 1240326122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 510127396 + 1706103025 = 22586^2 + 41305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2216230421 - 2² = 2216230417 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 (2216230411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222455 + ... + 232203.

It is an arithmetic number, because the mean of its divisors is an integer number (278386875).

Almost surely, 2^2216230421 is an apocalyptic number.

It is an amenable number.

2216230421 is a deficient number, since it is larger than the sum of its proper divisors (10864579).

2216230421 is an equidigital number, since it uses as much as digits as its factorization.

2216230421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10839.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2216230421 is about 47076.8565326956. The cubic root of 2216230421 is about 1303.7819692444.

Adding to 2216230421 its reverse (1240326122), we get a palindrome (3456556543).

The spelling of 2216230421 in words is "two billion, two hundred sixteen million, two hundred thirty thousand, four hundred twenty-one".