12212045 has 8 divisors (see below), whose sum is σ = 15159960. Its totient is φ = 9432640.

The previous prime is 12212029. The next prime is 12212051. The reversal of 12212045 is 54021221.

It can be written as a sum of positive squares in 4 ways, for example, as 4932841 + 7279204 = 2221^2 + 2698^2 .

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

It is not a de Polignac number, because 12212045 - 2⁴ = 12212029 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, 41966 + ... + 42255.

It is an arithmetic number, because the mean of its divisors is an integer number (1894995).

Almost surely, 2^12212045 is an apocalyptic number.

It is an amenable number.

12212045 is a deficient number, since it is larger than the sum of its proper divisors (2947915).

12212045 is an equidigital number, since it uses as much as digits as its factorization.

12212045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84255.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12212045 is about 3494.5736506761. The cubic root of 12212045 is about 230.2834878709.

Adding to 12212045 its reverse (54021221), we get a palindrome (66233266).

It can be divided in two parts, 122 and 12045, that added together give a cube (12167 = 23³).

The spelling of 12212045 in words is "twelve million, two hundred twelve thousand, forty-five".