22012071 has 4 divisors (see below), whose sum is σ = 29349432. Its totient is φ = 14674712.

The previous prime is 22012069. The next prime is 22012079. The reversal of 22012071 is 17021022.

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

It is a cyclic number.

It is not a de Polignac number, because 22012071 - 2¹ = 22012069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22012071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012079) 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, 3668676 + ... + 3668681.

It is an arithmetic number, because the mean of its divisors is an integer number (7337358).

Almost surely, 2^22012071 is an apocalyptic number.

22012071 is a deficient number, since it is larger than the sum of its proper divisors (7337361).

22012071 is an equidigital number, since it uses as much as digits as its factorization.

22012071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337360.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 22012071 is about 4691.7023562882. The cubic root of 22012071 is about 280.2551712967.

Adding to 22012071 its reverse (17021022), we get a palindrome (39033093).

The spelling of 22012071 in words is "twenty-two million, twelve thousand, seventy-one".