122699089656 has 320 divisors, whose sum is σ = 425009692800. Its totient is φ = 32514566400.

The previous prime is 122699089553. The next prime is 122699089657. The reversal of 122699089656 is 656980996221.

It is a super-2 number, since 2×122699089656² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122699089593 and 122699089602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122699089657) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1725771 + ... + 1795461.

It is an arithmetic number, because the mean of its divisors is an integer number (1328155290).

Almost surely, 2^122699089656 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 122699089656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212504846400).

122699089656 is an abundant number, since it is smaller than the sum of its proper divisors (302310603144).

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

122699089656 is a wasteful number, since it uses less digits than its factorization.

122699089656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69752 (or 69739 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 122699089656 in words is "one hundred twenty-two billion, six hundred ninety-nine million, eighty-nine thousand, six hundred fifty-six".