22071091 has 8 divisors (see below), whose sum is σ = 25253120. Its totient is φ = 18896328.

The previous prime is 22071067. The next prime is 22071097. The reversal of 22071091 is 19017022.

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

It is a cyclic number.

It is not a de Polignac number, because 22071091 - 2⁷ = 22070963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22071097) 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, 9040 + ... + 11218.

It is an arithmetic number, because the mean of its divisors is an integer number (3156640).

Almost surely, 2^22071091 is an apocalyptic number.

22071091 is a deficient number, since it is larger than the sum of its proper divisors (3182029).

22071091 is a wasteful number, since it uses less digits than its factorization.

22071091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 22071091 is about 4697.9879735904. The cubic root of 22071091 is about 280.5054263945.

The spelling of 22071091 in words is "twenty-two million, seventy-one thousand, ninety-one".