122120666650 has 12 divisors (see below), whose sum is σ = 227144440062. Its totient is φ = 48848266640.

The previous prime is 122120666627. The next prime is 122120666663. The reversal of 122120666650 is 56666021221.

It can be written as a sum of positive squares in 3 ways, for example, as 65624605929 + 56496060721 = 256173^2 + 237689^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1221206617 + ... + 1221206716.

Almost surely, 2^122120666650 is an apocalyptic number.

122120666650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122120666650 is a deficient number, since it is larger than the sum of its proper divisors (105023773412).

122120666650 is a wasteful number, since it uses less digits than its factorization.

122120666650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442413345 (or 2442413340 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 122120666650 its reverse (56666021221), we get a palindrome (178786687871).

The spelling of 122120666650 in words is "one hundred twenty-two billion, one hundred twenty million, six hundred sixty-six thousand, six hundred fifty".