22666201 has 4 divisors (see below), whose sum is σ = 23651712. Its totient is φ = 21680692.

The previous prime is 22666141. The next prime is 22666211. The reversal of 22666201 is 10266622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10266622 = 2 ⋅5133311.

It is a cyclic number.

It is not a de Polignac number, because 22666201 - 2⁷ = 22666073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22666211) 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, 492721 + ... + 492766.

It is an arithmetic number, because the mean of its divisors is an integer number (5912928).

Almost surely, 2^22666201 is an apocalyptic number.

It is an amenable number.

22666201 is a deficient number, since it is larger than the sum of its proper divisors (985511).

22666201 is an equidigital number, since it uses as much as digits as its factorization.

22666201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985510.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 22666201 is about 4760.9033806621. The cubic root of 22666201 is about 283.0042202420.

The spelling of 22666201 in words is "twenty-two million, six hundred sixty-six thousand, two hundred one".