261133422223 has 2 divisors, whose sum is σ = 261133422224. Its totient is φ = 261133422222.

The previous prime is 261133422181. The next prime is 261133422227. The reversal of 261133422223 is 322224331162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261133422223 - 2⁹ = 261133421711 is a prime.

It is a super-3 number, since 3×261133422223³ (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 (261133422227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130566711111 + 130566711112.

It is an arithmetic number, because the mean of its divisors is an integer number (130566711112).

Almost surely, 2^261133422223 is an apocalyptic number.

261133422223 is a deficient number, since it is larger than the sum of its proper divisors (1).

261133422223 is an equidigital number, since it uses as much as digits as its factorization.

261133422223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 31.

Adding to 261133422223 its reverse (322224331162), we get a palindrome (583357753385).

The spelling of 261133422223 in words is "two hundred sixty-one billion, one hundred thirty-three million, four hundred twenty-two thousand, two hundred twenty-three".