122021320320 has 128 divisors (see below), whose sum is σ = 432158904000. Its totient is φ = 32539014144.

The previous prime is 122021320303. The next prime is 122021320367. The reversal of 122021320320 is 23023120221.

122021320320 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 21 + 320 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×122021320320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 122021320293 and 122021320302.

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, 3513430 + ... + 3547989.

Almost surely, 2^122021320320 is an apocalyptic number.

122021320320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122021320320 is an abundant number, since it is smaller than the sum of its proper divisors (310137583680).

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

122021320320 is an equidigital number, since it uses as much as digits as its factorization.

122021320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7061447 (or 7061429 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 122021320320 its reverse (23023120221), we get a palindrome (145044440541).

The spelling of 122021320320 in words is "one hundred twenty-two billion, twenty-one million, three hundred twenty thousand, three hundred twenty".