12212061 has 4 divisors (see below), whose sum is σ = 16282752. Its totient is φ = 8141372.

The previous prime is 12212059. The next prime is 12212063. The reversal of 12212061 is 16021221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12212059) and next prime (12212063).

It is a cyclic number.

It is not a de Polignac number, because 12212061 - 2¹ = 12212059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12212061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035341 + ... + 2035346.

It is an arithmetic number, because the mean of its divisors is an integer number (4070688).

Almost surely, 2^12212061 is an apocalyptic number.

It is an amenable number.

12212061 is a deficient number, since it is larger than the sum of its proper divisors (4070691).

12212061 is an equidigital number, since it uses as much as digits as its factorization.

12212061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070690.

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

The square root of 12212061 is about 3494.5759399389. The cubic root of 12212061 is about 230.2835884419.

Adding to 12212061 its reverse (16021221), we get a palindrome (28233282).

The spelling of 12212061 in words is "twelve million, two hundred twelve thousand, sixty-one".