22212907 has 4 divisors (see below), whose sum is σ = 22293376. Its totient is φ = 22132440.

The previous prime is 22212901. The next prime is 22212929. The reversal of 22212907 is 70921222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70921222 = 2 ⋅35460611.

It is a cyclic number.

It is not a de Polignac number, because 22212907 - 2¹⁹ = 21688619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39819 + ... + 40372.

It is an arithmetic number, because the mean of its divisors is an integer number (5573344).

Almost surely, 2^22212907 is an apocalyptic number.

22212907 is a deficient number, since it is larger than the sum of its proper divisors (80469).

22212907 is an equidigital number, since it uses as much as digits as its factorization.

22212907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80468.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 22212907 is about 4713.0570758267. The cubic root of 22212907 is about 281.1049324634.

The spelling of 22212907 in words is "twenty-two million, two hundred twelve thousand, nine hundred seven".