22070091 has 4 divisors (see below), whose sum is σ = 29426792. Its totient is φ = 14713392.

The previous prime is 22070089. The next prime is 22070099. The reversal of 22070091 is 19007022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22070091 - 2¹ = 22070089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22070099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3678346 + ... + 3678351.

It is an arithmetic number, because the mean of its divisors is an integer number (7356698).

Almost surely, 2^22070091 is an apocalyptic number.

22070091 is a deficient number, since it is larger than the sum of its proper divisors (7356701).

22070091 is an equidigital number, since it uses as much as digits as its factorization.

22070091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7356700.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 22070091 is about 4697.8815438451. The cubic root of 22070091 is about 280.5011899378.

The spelling of 22070091 in words is "twenty-two million, seventy thousand, ninety-one".