101221030344 has 64 divisors (see below), whose sum is σ = 289240704000. Its totient is φ = 28916518464.

The previous prime is 101221030343. The next prime is 101221030373. The reversal of 101221030344 is 443030122101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 101221030344.

It is not an unprimeable number, because it can be changed into a prime (101221030343) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1409599 + ... + 1479665.

It is an arithmetic number, because the mean of its divisors is an integer number (4519386000).

Almost surely, 2^101221030344 is an apocalyptic number.

101221030344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

101221030344 is an abundant number, since it is smaller than the sum of its proper divisors (188019673656).

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

101221030344 is a wasteful number, since it uses less digits than its factorization.

101221030344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78682 (or 78678 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 101221030344 its reverse (443030122101), we get a palindrome (544251152445).

The spelling of 101221030344 in words is "one hundred one billion, two hundred twenty-one million, thirty thousand, three hundred forty-four".