22003961 has 8 divisors (see below), whose sum is σ = 25397184. Its totient is φ = 18673200.

The previous prime is 22003913. The next prime is 22003963. The reversal of 22003961 is 16930022.

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

It is not a de Polignac number, because 22003961 - 2¹⁸ = 21741817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22003963) 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, 14855 + ... + 16268.

It is an arithmetic number, because the mean of its divisors is an integer number (3174648).

Almost surely, 2^22003961 is an apocalyptic number.

It is an amenable number.

22003961 is a deficient number, since it is larger than the sum of its proper divisors (3393223).

22003961 is a wasteful number, since it uses less digits than its factorization.

22003961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31231.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 22003961 is about 4690.8379848381. The cubic root of 22003961 is about 280.2207485379.

Adding to 22003961 its reverse (16930022), we get a palindrome (38933983).

The spelling of 22003961 in words is "twenty-two million, three thousand, nine hundred sixty-one".