122251745616 has 240 divisors, whose sum is σ = 431607250368. Its totient is φ = 29311027200.

The previous prime is 122251745611. The next prime is 122251745639. The reversal of 122251745616 is 616547152221.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122251745611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 154596 + ... + 518076.

Almost surely, 2^122251745616 is an apocalyptic number.

122251745616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122251745616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215803625184).

122251745616 is an abundant number, since it is smaller than the sum of its proper divisors (309355504752).

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

122251745616 is a wasteful number, since it uses less digits than its factorization.

122251745616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363530 (or 363517 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

Adding to 122251745616 its reverse (616547152221), we get a palindrome (738798897837).

The spelling of 122251745616 in words is "one hundred twenty-two billion, two hundred fifty-one million, seven hundred forty-five thousand, six hundred sixteen".