21286196311 has 12 divisors (see below), whose sum is σ = 21933835560. Its totient is φ = 20657135520.

The previous prime is 21286196293. The next prime is 21286196329. The reversal of 21286196311 is 11369168212.

It is an interprime number because it is at equal distance from previous prime (21286196293) and next prime (21286196329).

It is not a de Polignac number, because 21286196311 - 2²¹ = 21284099159 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 (21286196381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512556 + ... + 552526.

It is an arithmetic number, because the mean of its divisors is an integer number (1827819630).

Almost surely, 2^21286196311 is an apocalyptic number.

21286196311 is a deficient number, since it is larger than the sum of its proper divisors (647639249).

21286196311 is an equidigital number, since it uses as much as digits as its factorization.

21286196311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40434 (or 40397 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The spelling of 21286196311 in words is "twenty-one billion, two hundred eighty-six million, one hundred ninety-six thousand, three hundred eleven".