22030081 has 4 divisors (see below), whose sum is σ = 22277700. Its totient is φ = 21782464.

The previous prime is 22030039. The next prime is 22030091. The reversal of 22030081 is 18003022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18003022 = 2 ⋅9001511.

It can be written as a sum of positive squares in 2 ways, for example, as 9363600 + 12666481 = 3060^2 + 3559^2 .

It is a cyclic number.

It is not a de Polignac number, because 22030081 - 2¹³ = 22021889 is a prime.

It is a super-2 number, since 2×22030081² = 970648937733122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22030031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123676 + ... + 123853.

It is an arithmetic number, because the mean of its divisors is an integer number (5569425).

Almost surely, 2^22030081 is an apocalyptic number.

It is an amenable number.

22030081 is a deficient number, since it is larger than the sum of its proper divisors (247619).

22030081 is an equidigital number, since it uses as much as digits as its factorization.

22030081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247618.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 22030081 is about 4693.6213098204. The cubic root of 22030081 is about 280.3315842141.

The spelling of 22030081 in words is "twenty-two million, thirty thousand, eighty-one".