223111420447 has 2 divisors, whose sum is σ = 223111420448. Its totient is φ = 223111420446.

The previous prime is 223111420391. The next prime is 223111420457. The reversal of 223111420447 is 744024111322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223111420447 - 2²³ = 223103031839 is a prime.

It is a super-3 number, since 3×223111420447³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223111420457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111555710223 + 111555710224.

It is an arithmetic number, because the mean of its divisors is an integer number (111555710224).

Almost surely, 2^223111420447 is an apocalyptic number.

223111420447 is a deficient number, since it is larger than the sum of its proper divisors (1).

223111420447 is an equidigital number, since it uses as much as digits as its factorization.

223111420447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 223111420447 its reverse (744024111322), we get a palindrome (967135531769).

The spelling of 223111420447 in words is "two hundred twenty-three billion, one hundred eleven million, four hundred twenty thousand, four hundred forty-seven".