1286222664081 has 4 divisors (see below), whose sum is σ = 1714963552112. Its totient is φ = 857481776052.

The previous prime is 1286222664037. The next prime is 1286222664113. The reversal of 1286222664081 is 1804662226821.

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 not a de Polignac number, because 1286222664081 - 2⁶ = 1286222664017 is a prime.

It is a super-2 number, since 2×1286222664081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1286222664081.

It is not an unprimeable number, because it can be changed into a prime (1286222664481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214370444011 + ... + 214370444016.

It is an arithmetic number, because the mean of its divisors is an integer number (428740888028).

Almost surely, 2^{1286222664081} is an apocalyptic number.

It is an amenable number.

1286222664081 is a deficient number, since it is larger than the sum of its proper divisors (428740888031).

1286222664081 is an equidigital number, since it uses as much as digits as its factorization.

1286222664081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428740888030.

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 1286222664081 in words is "one trillion, two hundred eighty-six billion, two hundred twenty-two million, six hundred sixty-four thousand, eighty-one".