22006961 has 4 divisors (see below), whose sum is σ = 22019952. Its totient is φ = 21993972.

The previous prime is 22006949. The next prime is 22006967. The reversal of 22006961 is 16960022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22006961 - 2¹⁰ = 22005937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22006961.

It is not an unprimeable number, because it can be changed into a prime (22006967) 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, 3491 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (5504988).

Almost surely, 2^22006961 is an apocalyptic number.

It is an amenable number.

22006961 is a deficient number, since it is larger than the sum of its proper divisors (12991).

22006961 is a wasteful number, since it uses less digits than its factorization.

22006961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12990.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 22006961 is about 4691.1577462285. The cubic root of 22006961 is about 280.2334829730.

Adding to 22006961 its reverse (16960022), we get a palindrome (38966983).

The spelling of 22006961 in words is "twenty-two million, six thousand, nine hundred sixty-one".