101220244 has 12 divisors (see below), whose sum is σ = 187555284. Its totient is φ = 47633024.

The previous prime is 101220233. The next prime is 101220253. The reversal of 101220244 is 442022101.

It can be written as a sum of positive squares in 2 ways, for example, as 86490000 + 14730244 = 9300^2 + 3838^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744199 + ... + 744334.

It is an arithmetic number, because the mean of its divisors is an integer number (15629607).

Almost surely, 2^101220244 is an apocalyptic number.

It is an amenable number.

101220244 is a deficient number, since it is larger than the sum of its proper divisors (86335040).

101220244 is a wasteful number, since it uses less digits than its factorization.

101220244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488554 (or 1488552 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 101220244 is about 10060.8272025714. The cubic root of 101220244 is about 466.0392127477.

Adding to 101220244 its reverse (442022101), we get a palindrome (543242345).

The spelling of 101220244 in words is "one hundred one million, two hundred twenty thousand, two hundred forty-four".