101020215 has 8 divisors (see below), whose sum is σ = 161632368. Its totient is φ = 53877440.

The previous prime is 101020189. The next prime is 101020217. The reversal of 101020215 is 512020101.

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

It is not a de Polignac number, because 101020215 - 2⁶ = 101020151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101020215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020217) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3367326 + ... + 3367355.

It is an arithmetic number, because the mean of its divisors is an integer number (20204046).

Almost surely, 2^101020215 is an apocalyptic number.

101020215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101020215 is a deficient number, since it is larger than the sum of its proper divisors (60612153).

101020215 is an equidigital number, since it uses as much as digits as its factorization.

101020215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734689.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 101020215 is about 10050.8813046419. The cubic root of 101020215 is about 465.7320184923.

Adding to 101020215 its reverse (512020101), we get a palindrome (613040316).

The spelling of 101020215 in words is "one hundred one million, twenty thousand, two hundred fifteen".