223212303553 has 2 divisors, whose sum is σ = 223212303554. Its totient is φ = 223212303552.

The previous prime is 223212303427. The next prime is 223212303583. The reversal of 223212303553 is 355303212322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223092794929 + 119508624 = 472327^2 + 10932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223212303553 is a prime.

It is a super-3 number, since 3×223212303553³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223212303583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111606151776 + 111606151777.

It is an arithmetic number, because the mean of its divisors is an integer number (111606151777).

Almost surely, 2^223212303553 is an apocalyptic number.

It is an amenable number.

223212303553 is a deficient number, since it is larger than the sum of its proper divisors (1).

223212303553 is an equidigital number, since it uses as much as digits as its factorization.

223212303553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 223212303553 its reverse (355303212322), we get a palindrome (578515515875).

The spelling of 223212303553 in words is "two hundred twenty-three billion, two hundred twelve million, three hundred three thousand, five hundred fifty-three".