266242462221 has 16 divisors (see below), whose sum is σ = 370795929984. Its totient is φ = 169607469504.

The previous prime is 266242462201. The next prime is 266242462237. The reversal of 266242462221 is 122264242662.

It is not a de Polignac number, because 266242462221 - 2¹⁰ = 266242461197 is a prime.

It is a super-2 number, since 2×266242462221² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266242462221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266242462201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1866306 + ... + 2003891.

It is an arithmetic number, because the mean of its divisors is an integer number (23174745624).

Almost surely, 2^266242462221 is an apocalyptic number.

It is an amenable number.

266242462221 is a deficient number, since it is larger than the sum of its proper divisors (104553467763).

266242462221 is a wasteful number, since it uses less digits than its factorization.

266242462221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871220.

The product of its digits is 221184, while the sum is 39.

The spelling of 266242462221 in words is "two hundred sixty-six billion, two hundred forty-two million, four hundred sixty-two thousand, two hundred twenty-one".