11287695002221 has 4 divisors (see below), whose sum is σ = 12313849093344. Its totient is φ = 10261540911100.

The previous prime is 11287695002149. The next prime is 11287695002231. The reversal of 11287695002221 is 12220059678211.

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 11287695002221 - 2¹¹ = 11287695000173 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 (11287695002231) 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, 513077045545 + ... + 513077045566.

It is an arithmetic number, because the mean of its divisors is an integer number (3078462273336).

Almost surely, 2^{11287695002221} is an apocalyptic number.

11287695002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11287695002221 is a deficient number, since it is larger than the sum of its proper divisors (1026154091123).

11287695002221 is a wasteful number, since it uses less digits than its factorization.

11287695002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026154091122.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 11287695002221 in words is "eleven trillion, two hundred eighty-seven billion, six hundred ninety-five million, two thousand, two hundred twenty-one".