224220023981 has 2 divisors, whose sum is σ = 224220023982. Its totient is φ = 224220023980.

The previous prime is 224220023953. The next prime is 224220024029. The reversal of 224220023981 is 189320022422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187221501481 + 36998522500 = 432691^2 + 192350^2 .

It is a cyclic number.

It is not a de Polignac number, because 224220023981 - 2¹⁴ = 224220007597 is a prime.

It is a super-2 number, since 2×224220023981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224220026981) 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 as a sum of consecutive naturals, namely, 112110011990 + 112110011991.

It is an arithmetic number, because the mean of its divisors is an integer number (112110011991).

Almost surely, 2^224220023981 is an apocalyptic number.

It is an amenable number.

224220023981 is a deficient number, since it is larger than the sum of its proper divisors (1).

224220023981 is an equidigital number, since it uses as much as digits as its factorization.

224220023981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 224220023981 in words is "two hundred twenty-four billion, two hundred twenty million, twenty-three thousand, nine hundred eighty-one".