101221030320 has 40 divisors (see below), whose sum is σ = 313785194736. Its totient is φ = 26992274688.

The previous prime is 101221030291. The next prime is 101221030343. The reversal of 101221030320 is 23030122101.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 101221030320.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210876907 + ... + 210877386.

Almost surely, 2^101221030320 is an apocalyptic number.

101221030320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221030320 is an abundant number, since it is smaller than the sum of its proper divisors (212564164416).

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

101221030320 is a wasteful number, since it uses less digits than its factorization.

101221030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421754309 (or 421754303 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 101221030320 its reverse (23030122101), we get a palindrome (124251152421).

The spelling of 101221030320 in words is "one hundred one billion, two hundred twenty-one million, thirty thousand, three hundred twenty".