224273154821 has 2 divisors, whose sum is σ = 224273154822. Its totient is φ = 224273154820.

The previous prime is 224273154803. The next prime is 224273154877. The reversal of 224273154821 is 128451372422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172877997796 + 51395157025 = 415786^2 + 226705^2 .

It is a cyclic number.

It is not a de Polignac number, because 224273154821 - 2¹⁸ = 224272892677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224273150821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112136577410 + 112136577411.

It is an arithmetic number, because the mean of its divisors is an integer number (112136577411).

Almost surely, 2^224273154821 is an apocalyptic number.

It is an amenable number.

224273154821 is a deficient number, since it is larger than the sum of its proper divisors (1).

224273154821 is an equidigital number, since it uses as much as digits as its factorization.

224273154821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 41.

The spelling of 224273154821 in words is "two hundred twenty-four billion, two hundred seventy-three million, one hundred fifty-four thousand, eight hundred twenty-one".