22261607 has 4 divisors (see below), whose sum is σ = 22271496. Its totient is φ = 22251720.

The previous prime is 22261579. The next prime is 22261637. The reversal of 22261607 is 70616222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70616222 = 2 ⋅35308111.

It is a cyclic number.

It is not a de Polignac number, because 22261607 - 2¹² = 22257511 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261637) 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, 257 + ... + 6677.

It is an arithmetic number, because the mean of its divisors is an integer number (5567874).

Almost surely, 2^22261607 is an apocalyptic number.

22261607 is a deficient number, since it is larger than the sum of its proper divisors (9889).

22261607 is an equidigital number, since it uses as much as digits as its factorization.

22261607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9888.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22261607 is about 4718.2207451538. The cubic root of 22261607 is about 281.3102157817.

Adding to 22261607 its reverse (70616222), we get a palindrome (92877829).

The spelling of 22261607 in words is "twenty-two million, two hundred sixty-one thousand, six hundred seven".