242000221266 has 64 divisors (see below), whose sum is σ = 549572636160. Its totient is φ = 78899788800.

The previous prime is 242000221241. The next prime is 242000221271. The reversal of 242000221266 is 662122000242.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4033560 + ... + 4093116.

It is an arithmetic number, because the mean of its divisors is an integer number (8587072440).

Almost surely, 2^242000221266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242000221266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274786318080).

242000221266 is an abundant number, since it is smaller than the sum of its proper divisors (307572414894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242000221266 is a wasteful number, since it uses less digits than its factorization.

242000221266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61216 (or 61210 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 242000221266 in words is "two hundred forty-two billion, two hundred twenty-one thousand, two hundred sixty-six".