10212135686 has 4 divisors (see below), whose sum is σ = 15318203532. Its totient is φ = 5106067842.

The previous prime is 10212135683. The next prime is 10212135707. The reversal of 10212135686 is 68653121201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212135683) 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 as a sum of consecutive naturals, namely, 2553033920 + ... + 2553033923.

It is an arithmetic number, because the mean of its divisors is an integer number (3829550883).

Almost surely, 2^10212135686 is an apocalyptic number.

10212135686 is a deficient number, since it is larger than the sum of its proper divisors (5106067846).

10212135686 is an equidigital number, since it uses as much as digits as its factorization.

10212135686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106067845.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 10212135686 its reverse (68653121201), we get a palindrome (78865256887).

The spelling of 10212135686 in words is "ten billion, two hundred twelve million, one hundred thirty-five thousand, six hundred eighty-six".