202120110320 has 20 divisors (see below), whose sum is σ = 469929256680. Its totient is φ = 80848044096.

The previous prime is 202120110319. The next prime is 202120110341. The reversal of 202120110320 is 23011021202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 202120110295 and 202120110304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263250610 + ... + 1263250769.

It is an arithmetic number, because the mean of its divisors is an integer number (23496462834).

Almost surely, 2^202120110320 is an apocalyptic number.

202120110320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120110320 is an abundant number, since it is smaller than the sum of its proper divisors (267809146360).

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

202120110320 is a wasteful number, since it uses less digits than its factorization.

202120110320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526501392 (or 2526501386 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 202120110320 its reverse (23011021202), we get a palindrome (225131131522).

The spelling of 202120110320 in words is "two hundred two billion, one hundred twenty million, one hundred ten thousand, three hundred twenty".