121722366 has 8 divisors (see below), whose sum is σ = 243444744. Its totient is φ = 40574120.

The previous prime is 121722361. The next prime is 121722373. The reversal of 121722366 is 663227121.

It is a sphenic number, since it is the product of 3 distinct primes.

121722366 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121722361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10143525 + ... + 10143536.

It is an arithmetic number, because the mean of its divisors is an integer number (30430593).

Almost surely, 2^121722366 is an apocalyptic number.

121722366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121722366 is a wasteful number, since it uses less digits than its factorization.

121722366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20287066.

The product of its digits is 6048, while the sum is 30.

The square root of 121722366 is about 11032.7859582247. The cubic root of 121722366 is about 495.5910580680.

Adding to 121722366 its reverse (663227121), we get a palindrome (784949487).

The spelling of 121722366 in words is "one hundred twenty-one million, seven hundred twenty-two thousand, three hundred sixty-six".