13011222 has 32 divisors (see below), whose sum is σ = 31491072. Its totient is φ = 3498624.

The previous prime is 13011209. The next prime is 13011223. The reversal of 13011222 is 22211031.

It is a junction number, because it is equal to n+sod(n) for n = 13011198 and 13011207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8398 + ... + 9825.

It is an arithmetic number, because the mean of its divisors is an integer number (984096).

Almost surely, 2^13011222 is an apocalyptic number.

13011222 is an abundant number, since it is smaller than the sum of its proper divisors (18479850).

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

13011222 is a wasteful number, since it uses less digits than its factorization.

13011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18252.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13011222 is about 3607.1071511670. The cubic root of 13011222 is about 235.2011074616.

Adding to 13011222 its reverse (22211031), we get a palindrome (35222253).

The spelling of 13011222 in words is "thirteen million, eleven thousand, two hundred twenty-two".