122217036624 has 140 divisors (see below), whose sum is σ = 364627567476. Its totient is φ = 39637817856.

The previous prime is 122217036589. The next prime is 122217036629. The reversal of 122217036624 is 426630712221.

122217036624 is a `hidden beast` number, since 1 + 2 + 2 + 21 + 7 + 0 + 3 + 6 + 624 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 117876862224 + 4340174400 = 343332^2 + 65880^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122217036629) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 289972 + ... + 573164.

Almost surely, 2^122217036624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122217036624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182313783738).

122217036624 is an abundant number, since it is smaller than the sum of its proper divisors (242410530852).

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

122217036624 is an equidigital number, since it uses as much as digits as its factorization.

122217036624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283256 (or 283235 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Adding to 122217036624 its reverse (426630712221), we get a palindrome (548847748845).

The spelling of 122217036624 in words is "one hundred twenty-two billion, two hundred seventeen million, thirty-six thousand, six hundred twenty-four".