10522218 has 32 divisors (see below), whose sum is σ = 25467264. Its totient is φ = 2829312.

The previous prime is 10522217. The next prime is 10522241. The reversal of 10522218 is 81222501.

It is a happy number.

It is a super-2 number, since 2×10522218² = 221434143279048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 10522194 and 10522203.

It is not an unprimeable number, because it can be changed into a prime (10522217) 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, 6655 + ... + 8082.

It is an arithmetic number, because the mean of its divisors is an integer number (795852).

Almost surely, 2^10522218 is an apocalyptic number.

10522218 is an abundant number, since it is smaller than the sum of its proper divisors (14945046).

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

10522218 is a wasteful number, since it uses less digits than its factorization.

10522218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14766.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 10522218 is about 3243.7968493727. The cubic root of 10522218 is about 219.1302992245.

Adding to 10522218 its reverse (81222501), we get a palindrome (91744719).

The spelling of 10522218 in words is "ten million, five hundred twenty-two thousand, two hundred eighteen".