122071616646 has 32 divisors (see below), whose sum is σ = 279035705088. Its totient is φ = 34875746400.

The previous prime is 122071616617. The next prime is 122071616657. The reversal of 122071616646 is 646616170221.

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

It is a junction number, because it is equal to n+sod(n) for n = 122071616598 and 122071616607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 851236 + ... + 984248.

It is an arithmetic number, because the mean of its divisors is an integer number (8719865784).

Almost surely, 2^122071616646 is an apocalyptic number.

122071616646 is an abundant number, since it is smaller than the sum of its proper divisors (156964088442).

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

122071616646 is a wasteful number, since it uses less digits than its factorization.

122071616646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154876.

The product of its (nonzero) digits is 145152, while the sum is 42.

Adding to 122071616646 its reverse (646616170221), we get a palindrome (768687786867).

The spelling of 122071616646 in words is "one hundred twenty-two billion, seventy-one million, six hundred sixteen thousand, six hundred forty-six".