122422121658 has 80 divisors (see below), whose sum is σ = 290665355904. Its totient is φ = 38378793600.

The previous prime is 122422121617. The next prime is 122422121663. The reversal of 122422121658 is 856121224221.

122422121658 is a `hidden beast` number, since 12 + 2 + 422 + 1 + 216 + 5 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3914383 + ... + 3945533.

Almost surely, 2^122422121658 is an apocalyptic number.

122422121658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122422121658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145332677952).

122422121658 is an abundant number, since it is smaller than the sum of its proper divisors (168243234246).

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

122422121658 is a wasteful number, since it uses less digits than its factorization.

122422121658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32609 (or 32600 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

Adding to 122422121658 its reverse (856121224221), we get a palindrome (978543345879).

The spelling of 122422121658 in words is "one hundred twenty-two billion, four hundred twenty-two million, one hundred twenty-one thousand, six hundred fifty-eight".