101020321 has 8 divisors (see below), whose sum is σ = 106610400. Its totient is φ = 95457600.

The previous prime is 101020303. The next prime is 101020327. The reversal of 101020321 is 123020101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101020321 - 2¹¹ = 101018273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101020298 and 101020307.

It is not an unprimeable number, because it can be changed into a prime (101020327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990 + ... + 14248.

It is an arithmetic number, because the mean of its divisors is an integer number (13326300).

Almost surely, 2^101020321 is an apocalyptic number.

It is an amenable number.

101020321 is a deficient number, since it is larger than the sum of its proper divisors (5590079).

101020321 is a wasteful number, since it uses less digits than its factorization.

101020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13679.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 101020321 is about 10050.8865778099. The cubic root of 101020321 is about 465.7321813890.

Adding to 101020321 its reverse (123020101), we get a palindrome (224040422).

The spelling of 101020321 in words is "one hundred one million, twenty thousand, three hundred twenty-one".