11211002211222 has 24 divisors (see below), whose sum is σ = 26498732499720. Its totient is φ = 3397273397280.

The previous prime is 11211002211217. The next prime is 11211002211223. The reversal of 11211002211222 is 22211220011211.

11211002211222 is a `hidden beast` number, since 1 + 121 + 100 + 221 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11211002211195 and 11211002211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211002211223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28310611447 + ... + 28310611842.

It is an arithmetic number, because the mean of its divisors is an integer number (1104113854155).

Almost surely, 2^{11211002211222} is an apocalyptic number.

11211002211222 is an abundant number, since it is smaller than the sum of its proper divisors (15287730288498).

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

11211002211222 is a wasteful number, since it uses less digits than its factorization.

11211002211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56621223308 (or 56621223305 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11211002211222 its reverse (22211220011211), we get a palindrome (33422222222433).

The spelling of 11211002211222 in words is "eleven trillion, two hundred eleven billion, two million, two hundred eleven thousand, two hundred twenty-two".