122539228650 has 192 divisors, whose sum is σ = 353438807040. Its totient is φ = 31159339200.

The previous prime is 122539228621. The next prime is 122539228687. The reversal of 122539228650 is 56822935221.

122539228650 is a `hidden beast` number, since 12 + 2 + 539 + 22 + 86 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 122539228596 and 122539228605.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10271589 + ... + 10283511.

It is an arithmetic number, because the mean of its divisors is an integer number (1840827120).

Almost surely, 2^122539228650 is an apocalyptic number.

122539228650 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 122539228650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176719403520).

122539228650 is an abundant number, since it is smaller than the sum of its proper divisors (230899578390).

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

122539228650 is a wasteful number, since it uses less digits than its factorization.

122539228650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12298 (or 12287 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 122539228650 in words is "one hundred twenty-two billion, five hundred thirty-nine million, two hundred twenty-eight thousand, six hundred fifty".