101022221544 has 32 divisors (see below), whose sum is σ = 259381381920. Its totient is φ = 32763963456.

The previous prime is 101022221539. The next prime is 101022221611. The reversal of 101022221544 is 445122220101.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 56880994 + ... + 56882769.

It is an arithmetic number, because the mean of its divisors is an integer number (8105668185).

Almost surely, 2^101022221544 is an apocalyptic number.

It is an amenable number.

101022221544 is an abundant number, since it is smaller than the sum of its proper divisors (158359160376).

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

101022221544 is a wasteful number, since it uses less digits than its factorization.

101022221544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113763809 (or 113763805 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 101022221544 its reverse (445122220101), we get a palindrome (546144441645).

It can be divided in two parts, 1010222 and 21544, that added together give a triangular number (1031766 = T₁₄₃₆).

The spelling of 101022221544 in words is "one hundred one billion, twenty-two million, two hundred twenty-one thousand, five hundred forty-four".