223478122541 has 2 divisors, whose sum is σ = 223478122542. Its totient is φ = 223478122540.

The previous prime is 223478122471. The next prime is 223478122547. The reversal of 223478122541 is 145221874322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133630458025 + 89847664516 = 365555^2 + 299746^2 .

It is a cyclic number.

It is not a de Polignac number, because 223478122541 - 2¹⁴ = 223478106157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223478122547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111739061270 + 111739061271.

It is an arithmetic number, because the mean of its divisors is an integer number (111739061271).

Almost surely, 2^223478122541 is an apocalyptic number.

It is an amenable number.

223478122541 is a deficient number, since it is larger than the sum of its proper divisors (1).

223478122541 is an equidigital number, since it uses as much as digits as its factorization.

223478122541 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.

Adding to 223478122541 its reverse (145221874322), we get a palindrome (368699996863).

The spelling of 223478122541 in words is "two hundred twenty-three billion, four hundred seventy-eight million, one hundred twenty-two thousand, five hundred forty-one".