10206215117 has 4 divisors (see below), whose sum is σ = 11664245856. Its totient is φ = 8748184380.

The previous prime is 10206215069. The next prime is 10206215147. The reversal of 10206215117 is 71151260201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10206215117 - 2⁶ = 10206215053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10206215147) 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, 729015359 + ... + 729015372.

It is an arithmetic number, because the mean of its divisors is an integer number (2916061464).

Almost surely, 2^10206215117 is an apocalyptic number.

It is an amenable number.

10206215117 is a deficient number, since it is larger than the sum of its proper divisors (1458030739).

10206215117 is an equidigital number, since it uses as much as digits as its factorization.

10206215117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458030738.

The product of its (nonzero) digits is 840, while the sum is 26.

Adding to 10206215117 its reverse (71151260201), we get a palindrome (81357475318).

The spelling of 10206215117 in words is "ten billion, two hundred six million, two hundred fifteen thousand, one hundred seventeen".