10215104444261 has 4 divisors (see below), whose sum is σ = 10215116976012. Its totient is φ = 10215091912512.

The previous prime is 10215104444239. The next prime is 10215104444299. The reversal of 10215104444261 is 16244440151201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8333902922500 + 1881201521761 = 2886850^2 + 1371569^2 .

It is a cyclic number.

It is not a de Polignac number, because 10215104444261 - 2³⁸ = 9940226537317 is a prime.

It is a super-2 number, since 2×10215104444261² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10215104474261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4951226 + ... + 6704091.

It is an arithmetic number, because the mean of its divisors is an integer number (2553779244003).

Almost surely, 2^{10215104444261} is an apocalyptic number.

It is an amenable number.

10215104444261 is a deficient number, since it is larger than the sum of its proper divisors (12531751).

10215104444261 is an equidigital number, since it uses as much as digits as its factorization.

10215104444261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12531750.

The product of its (nonzero) digits is 30720, while the sum is 35.

Adding to 10215104444261 its reverse (16244440151201), we get a palindrome (26459544595462).

The spelling of 10215104444261 in words is "ten trillion, two hundred fifteen billion, one hundred four million, four hundred forty-four thousand, two hundred sixty-one".