12220045 has 8 divisors (see below), whose sum is σ = 15137280. Its totient is φ = 9460560.

The previous prime is 12220037. The next prime is 12220081. The reversal of 12220045 is 54002221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12220045 - 2³ = 12220037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39265 + ... + 39574.

It is an arithmetic number, because the mean of its divisors is an integer number (1892160).

Almost surely, 2^12220045 is an apocalyptic number.

It is an amenable number.

12220045 is a deficient number, since it is larger than the sum of its proper divisors (2917235).

12220045 is an equidigital number, since it uses as much as digits as its factorization.

12220045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78875.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12220045 is about 3495.7180950414. The cubic root of 12220045 is about 230.3337624363. Note that the first 3 decimals are identical.

Adding to 12220045 its reverse (54002221), we get a palindrome (66222266).

The spelling of 12220045 in words is "twelve million, two hundred twenty thousand, forty-five".