122621065650 has 96 divisors (see below), whose sum is σ = 338218233600. Its totient is φ = 32667105600.

The previous prime is 122621065597. The next prime is 122621065667. The reversal of 122621065650 is 56560126221.

122621065650 is a `hidden beast` number, since 1 + 22 + 62 + 10 + 6 + 565 + 0 = 666.

It is a super-2 number, since 2×122621065650² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1358940 + ... + 1446360.

It is an arithmetic number, because the mean of its divisors is an integer number (3523106600).

Almost surely, 2^122621065650 is an apocalyptic number.

122621065650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122621065650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169109116800).

122621065650 is an abundant number, since it is smaller than the sum of its proper divisors (215597167950).

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

122621065650 is a wasteful number, since it uses less digits than its factorization.

122621065650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88481 (or 88470 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 122621065650 in words is "one hundred twenty-two billion, six hundred twenty-one million, sixty-five thousand, six hundred fifty".