22012601 has 4 divisors (see below), whose sum is σ = 23705892. Its totient is φ = 20319312.

The previous prime is 22012597. The next prime is 22012607. The reversal of 22012601 is 10621022.

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 14830201 + 7182400 = 3851^2 + 2680^2 .

It is not a de Polignac number, because 22012601 - 2² = 22012597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22012607) 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, 846626 + ... + 846651.

It is an arithmetic number, because the mean of its divisors is an integer number (5926473).

Almost surely, 2^22012601 is an apocalyptic number.

It is an amenable number.

22012601 is a deficient number, since it is larger than the sum of its proper divisors (1693291).

22012601 is a wasteful number, since it uses less digits than its factorization.

22012601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693290.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 22012601 is about 4691.7588386446. The cubic root of 22012601 is about 280.2574205784.

Adding to 22012601 its reverse (10621022), we get a palindrome (32633623).

It can be divided in two parts, 220 and 12601, that added together give a palindrome (12821).

The spelling of 22012601 in words is "twenty-two million, twelve thousand, six hundred one".