22212785 has 8 divisors (see below), whose sum is σ = 30463296. Its totient is φ = 15231600.

The previous prime is 22212763. The next prime is 22212787. The reversal of 22212785 is 58721222.

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

It is not a de Polignac number, because 22212785 - 2¹² = 22208689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317291 + ... + 317360.

It is an arithmetic number, because the mean of its divisors is an integer number (3807912).

Almost surely, 2^22212785 is an apocalyptic number.

It is an amenable number.

22212785 is a deficient number, since it is larger than the sum of its proper divisors (8250511).

22212785 is an equidigital number, since it uses as much as digits as its factorization.

22212785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634663.

The product of its digits is 4480, while the sum is 29.

The square root of 22212785 is about 4713.0441330418. The cubic root of 22212785 is about 281.1044178247.

The spelling of 22212785 in words is "twenty-two million, two hundred twelve thousand, seven hundred eighty-five".