11287263222 has 64 divisors (see below), whose sum is σ = 25552739520. Its totient is φ = 3692217600.

The previous prime is 11287263193. The next prime is 11287263241. The reversal of 11287263222 is 22236278211.

11287263222 is a `hidden beast` number, since 1 + 12 + 8 + 7 + 2 + 632 + 2 + 2 = 666.

It is a super-2 number, since 2×11287263222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1514818 + ... + 1522250.

It is an arithmetic number, because the mean of its divisors is an integer number (399261555).

Almost surely, 2^11287263222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11287263222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12776369760).

11287263222 is an abundant number, since it is smaller than the sum of its proper divisors (14265476298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11287263222 is a wasteful number, since it uses less digits than its factorization.

11287263222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966 (or 7960 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The spelling of 11287263222 in words is "eleven billion, two hundred eighty-seven million, two hundred sixty-three thousand, two hundred twenty-two".