12121206 has 32 divisors (see below), whose sum is σ = 25256448. Its totient is φ = 3875040.

The previous prime is 12121157. The next prime is 12121211. The reversal of 12121206 is 60212121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14541 + ... + 15351.

It is an arithmetic number, because the mean of its divisors is an integer number (789264).

Almost surely, 2^12121206 is an apocalyptic number.

12121206 is an abundant number, since it is smaller than the sum of its proper divisors (13135242).

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

12121206 is a wasteful number, since it uses less digits than its factorization.

12121206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 12121206 is about 3481.5522400217. The cubic root of 12121206 is about 229.7110801929.

Adding to 12121206 its reverse (60212121), we get a palindrome (72333327).

The spelling of 12121206 in words is "twelve million, one hundred twenty-one thousand, two hundred six".