122821176642 has 8 divisors (see below), whose sum is σ = 245642353296. Its totient is φ = 40940392212.

The previous prime is 122821176637. The next prime is 122821176659. The reversal of 122821176642 is 246671128221.

It is a sphenic number, since it is the product of 3 distinct primes.

122821176642 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 122821176594 and 122821176603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10235098048 + ... + 10235098059.

It is an arithmetic number, because the mean of its divisors is an integer number (30705294162).

Almost surely, 2^122821176642 is an apocalyptic number.

122821176642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

122821176642 is a wasteful number, since it uses less digits than its factorization.

122821176642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20470196112.

The product of its digits is 129024, while the sum is 42.

The spelling of 122821176642 in words is "one hundred twenty-two billion, eight hundred twenty-one million, one hundred seventy-six thousand, six hundred forty-two".