121605222 has 8 divisors (see below), whose sum is σ = 243210456. Its totient is φ = 40535072.

The previous prime is 121605203. The next prime is 121605223. The reversal of 121605222 is 222506121.

It is a happy number.

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

121605222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121605223) 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, 10133763 + ... + 10133774.

It is an arithmetic number, because the mean of its divisors is an integer number (30401307).

Almost surely, 2^121605222 is an apocalyptic number.

121605222 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.

121605222 is a wasteful number, since it uses less digits than its factorization.

121605222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20267542.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 121605222 is about 11027.4757764413. The cubic root of 121605222 is about 495.4320236063.

The spelling of 121605222 in words is "one hundred twenty-one million, six hundred five thousand, two hundred twenty-two".