101215320205 has 8 divisors (see below), whose sum is σ = 128602995192. Its totient is φ = 76209182208.

The previous prime is 101215320191. The next prime is 101215320211. The reversal of 101215320205 is 502023512101.

It can be written as a sum of positive squares in 4 ways, for example, as 11050845129 + 90164475076 = 105123^2 + 300274^2 .

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 101215320205 - 2¹⁹ = 101214795917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595384152 + ... + 595384321.

It is an arithmetic number, because the mean of its divisors is an integer number (16075374399).

Almost surely, 2^101215320205 is an apocalyptic number.

It is an amenable number.

101215320205 is a deficient number, since it is larger than the sum of its proper divisors (27387674987).

101215320205 is a wasteful number, since it uses less digits than its factorization.

101215320205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190768495.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 101215320205 its reverse (502023512101), we get a palindrome (603238832306).

The spelling of 101215320205 in words is "one hundred one billion, two hundred fifteen million, three hundred twenty thousand, two hundred five".