101221443425 has 24 divisors (see below), whose sum is σ = 127685256192. Its totient is φ = 79579080000.

The previous prime is 101221443403. The next prime is 101221443437. The reversal of 101221443425 is 524344122101.

It is a happy number.

It is not a de Polignac number, because 101221443425 - 2²² = 101217249121 is a prime.

It is a Duffinian 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 23 ways as a sum of consecutive naturals, for example, 1726442 + ... + 1784108.

It is an arithmetic number, because the mean of its divisors is an integer number (5320219008).

Almost surely, 2^101221443425 is an apocalyptic number.

It is an amenable number.

101221443425 is a deficient number, since it is larger than the sum of its proper divisors (26463812767).

101221443425 is a wasteful number, since it uses less digits than its factorization.

101221443425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58889 (or 58884 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 101221443425 its reverse (524344122101), we get a palindrome (625565565526).

The spelling of 101221443425 in words is "one hundred one billion, two hundred twenty-one million, four hundred forty-three thousand, four hundred twenty-five".