22012971 has 8 divisors (see below), whose sum is σ = 29372304. Its totient is φ = 14664480.

The previous prime is 22012961. The next prime is 22012981. The reversal of 22012971 is 17921022.

It is an interprime number because it is at equal distance from previous prime (22012961) and next prime (22012981).

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

It is not a de Polignac number, because 22012971 - 2¹³ = 22004779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22012901) 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, 6661 + ... + 9401.

It is an arithmetic number, because the mean of its divisors is an integer number (3671538).

Almost surely, 2^22012971 is an apocalyptic number.

22012971 is a deficient number, since it is larger than the sum of its proper divisors (7359333).

22012971 is a wasteful number, since it uses less digits than its factorization.

22012971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 22012971 is about 4691.7982693206. The cubic root of 22012971 is about 280.2589908103.

Adding to 22012971 its reverse (17921022), we get a palindrome (39933993).

The spelling of 22012971 in words is "twenty-two million, twelve thousand, nine hundred seventy-one".