22533232420261 has 4 divisors (see below), whose sum is σ = 22697708569452. Its totient is φ = 22368756271072.

The previous prime is 22533232420249. The next prime is 22533232420267. The reversal of 22533232420261 is 16202423233522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15115066596100 + 7418165824161 = 3887810^2 + 2723631^2 .

It is a cyclic number.

It is not a de Polignac number, because 22533232420261 - 2¹³ = 22533232412069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22533232420261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22533232420267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82238074390 + ... + 82238074663.

It is an arithmetic number, because the mean of its divisors is an integer number (5674427142363).

Almost surely, 2^{22533232420261} is an apocalyptic number.

It is an amenable number.

22533232420261 is a deficient number, since it is larger than the sum of its proper divisors (164476149191).

22533232420261 is a wasteful number, since it uses less digits than its factorization.

22533232420261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164476149190.

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 22533232420261 its reverse (16202423233522), we get a palindrome (38735655653783).

The spelling of 22533232420261 in words is "twenty-two trillion, five hundred thirty-three billion, two hundred thirty-two million, four hundred twenty thousand, two hundred sixty-one".