11221434 has 96 divisors (see below), whose sum is σ = 29877120. Its totient is φ = 2975616.

The previous prime is 11221423. The next prime is 11221439. The reversal of 11221434 is 43412211.

11221434 is a `hidden beast` number, since 11 + 221 + 434 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (11221439) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135157 + ... + 135239.

It is an arithmetic number, because the mean of its divisors is an integer number (311220).

Almost surely, 2^11221434 is an apocalyptic number.

11221434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14938560).

11221434 is an abundant number, since it is smaller than the sum of its proper divisors (18655686).

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

11221434 is a wasteful number, since it uses less digits than its factorization.

11221434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 161 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 11221434 is about 3349.8408917440. The cubic root of 11221434 is about 223.8804235298.

Adding to 11221434 its reverse (43412211), we get a palindrome (54633645).

It can be divided in two parts, 1122 and 1434, that added together give a triangular number (2556 = T₇₁).

The spelling of 11221434 in words is "eleven million, two hundred twenty-one thousand, four hundred thirty-four".