22312601 has 4 divisors (see below), whose sum is σ = 22462500. Its totient is φ = 22162704.

The previous prime is 22312597. The next prime is 22312607. The reversal of 22312601 is 10621322.

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 931225 + 21381376 = 965^2 + 4624^2 .

It is a cyclic number.

It is not a de Polignac number, because 22312601 - 2² = 22312597 is a prime.

It is a super-3 number, since 3×22312601³ (a number of 23 digits) contains 333 as substring.

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 22312601.

It is not an unprimeable number, because it can be changed into a prime (22312607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74726 + ... + 75023.

It is an arithmetic number, because the mean of its divisors is an integer number (5615625).

Almost surely, 2^22312601 is an apocalyptic number.

It is an amenable number.

22312601 is a deficient number, since it is larger than the sum of its proper divisors (149899).

22312601 is a wasteful number, since it uses less digits than its factorization.

22312601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149898.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 22312601 is about 4723.6215978844. The cubic root of 22312601 is about 281.5248482914.

Adding to 22312601 its reverse (10621322), we get a palindrome (32933923).

The spelling of 22312601 in words is "twenty-two million, three hundred twelve thousand, six hundred one".