2212144421 has 2 divisors, whose sum is σ = 2212144422. Its totient is φ = 2212144420.

The previous prime is 2212144411. The next prime is 2212144489. The reversal of 2212144421 is 1244412122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1362421921 + 849722500 = 36911^2 + 29150^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212144421 - 2⁶ = 2212144357 is a prime.

It is a super-2 number, since 2×2212144421² = 9787165878722850482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212144411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106072210 + 1106072211.

It is an arithmetic number, because the mean of its divisors is an integer number (1106072211).

Almost surely, 2^2212144421 is an apocalyptic number.

It is an amenable number.

2212144421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212144421 is an equidigital number, since it uses as much as digits as its factorization.

2212144421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024, while the sum is 23.

The square root of 2212144421 is about 47033.4393915648. The cubic root of 2212144421 is about 1302.9802279432.

Adding to 2212144421 its reverse (1244412122), we get a palindrome (3456556543).

The spelling of 2212144421 in words is "two billion, two hundred twelve million, one hundred forty-four thousand, four hundred twenty-one".