195122111322820 has 48 divisors (see below), whose sum is σ = 450701291609856. Its totient is φ = 70953495016800.

The previous prime is 195122111322781. The next prime is 195122111322821. The reversal of 195122111322820 is 28223111221591.

It is not an unprimeable number, because it can be changed into a prime (195122111322821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3664926636 + ... + 3664979875.

It is an arithmetic number, because the mean of its divisors is an integer number (9389610241872).

Almost surely, 2^{195122111322820} is an apocalyptic number.

195122111322820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195122111322820 is an abundant number, since it is smaller than the sum of its proper divisors (255579180287036).

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

195122111322820 is a wasteful number, since it uses less digits than its factorization.

195122111322820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329906553 (or 7329906529 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The spelling of 195122111322820 in words is "one hundred ninety-five trillion, one hundred twenty-two billion, one hundred eleven million, three hundred twenty-two thousand, eight hundred twenty".