21286196312 has 16 divisors (see below), whose sum is σ = 39913808400. Its totient is φ = 10642514080.

The previous prime is 21286196293. The next prime is 21286196329. The reversal of 21286196312 is 21369168212.

It is a self number, because there is not a number n which added to its sum of digits gives 21286196312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108389 + ... + 233067.

It is an arithmetic number, because the mean of its divisors is an integer number (2494613025).

Almost surely, 2^21286196312 is an apocalyptic number.

It is an amenable number.

21286196312 is a deficient number, since it is larger than the sum of its proper divisors (18627612088).

21286196312 is a wasteful number, since it uses less digits than its factorization.

21286196312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146026 (or 146022 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The spelling of 21286196312 in words is "twenty-one billion, two hundred eighty-six million, one hundred ninety-six thousand, three hundred twelve".