22011401 has 4 divisors (see below), whose sum is σ = 22123332. Its totient is φ = 21899472.

The previous prime is 22011373. The next prime is 22011403. The reversal of 22011401 is 10411022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18913801 + 3097600 = 4349^2 + 1760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22011401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011403) 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, 55670 + ... + 56063.

It is an arithmetic number, because the mean of its divisors is an integer number (5530833).

Almost surely, 2^22011401 is an apocalyptic number.

It is an amenable number.

22011401 is a deficient number, since it is larger than the sum of its proper divisors (111931).

22011401 is a wasteful number, since it uses less digits than its factorization.

22011401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111930.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 22011401 is about 4691.6309530908. The cubic root of 22011401 is about 280.2523278134.

Adding to 22011401 its reverse (10411022), we get a palindrome (32422423).

The spelling of 22011401 in words is "twenty-two million, eleven thousand, four hundred one".