12220061 has 16 divisors (see below), whose sum is σ = 14880000. Its totient is φ = 10012464.

The previous prime is 12220037. The next prime is 12220081. The reversal of 12220061 is 16002221.

It is not a de Polignac number, because 12220061 - 2⁶ = 12219997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220031) 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, 7115 + ... + 8663.

It is an arithmetic number, because the mean of its divisors is an integer number (930000).

Almost surely, 2^12220061 is an apocalyptic number.

It is an amenable number.

12220061 is a deficient number, since it is larger than the sum of its proper divisors (2659939).

12220061 is an equidigital number, since it uses as much as digits as its factorization.

12220061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593 (or 1579 counting only the distinct ones).

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

The square root of 12220061 is about 3495.7203835547. The cubic root of 12220061 is about 230.3338629634. Note that the first 3 decimals are identical.

Adding to 12220061 its reverse (16002221), we get a palindrome (28222282).

It can be divided in two parts, 122 and 20061, that multiplied together give a palindrome (2447442).

The spelling of 12220061 in words is "twelve million, two hundred twenty thousand, sixty-one".