13212122 has 16 divisors (see below), whose sum is σ = 24708672. Its totient is φ = 5147520.

The previous prime is 13212109. The next prime is 13212131. The reversal of 13212122 is 22121231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 13212097 and 13212106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42743 + ... + 43050.

It is an arithmetic number, because the mean of its divisors is an integer number (1544292).

Almost surely, 2^13212122 is an apocalyptic number.

13212122 is a deficient number, since it is larger than the sum of its proper divisors (11496550).

13212122 is a wasteful number, since it uses less digits than its factorization.

13212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85813.

The product of its digits is 48, while the sum is 14.

The square root of 13212122 is about 3634.8482774388. The cubic root of 13212122 is about 236.4054721626.

Adding to 13212122 its reverse (22121231), we get a palindrome (35333353).

It can be divided in two parts, 1321 and 2122, that added together give a palindrome (3443).

The spelling of 13212122 in words is "thirteen million, two hundred twelve thousand, one hundred twenty-two".