11227664784261 has 4 divisors (see below), whose sum is σ = 14970219712352. Its totient is φ = 7485109856172.

The previous prime is 11227664784229. The next prime is 11227664784313. The reversal of 11227664784261 is 16248746672211.

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 11227664784261 - 2⁵ = 11227664784229 is a prime.

It is a super-2 number, since 2×11227664784261² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11227664784361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871277464041 + ... + 1871277464046.

It is an arithmetic number, because the mean of its divisors is an integer number (3742554928088).

Almost surely, 2^{11227664784261} is an apocalyptic number.

It is an amenable number.

11227664784261 is a deficient number, since it is larger than the sum of its proper divisors (3742554928091).

11227664784261 is an equidigital number, since it uses as much as digits as its factorization.

11227664784261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742554928090.

The product of its digits is 10838016, while the sum is 57.

The spelling of 11227664784261 in words is "eleven trillion, two hundred twenty-seven billion, six hundred sixty-four million, seven hundred eighty-four thousand, two hundred sixty-one".