22201045 has 4 divisors (see below), whose sum is σ = 26641260. Its totient is φ = 17760832.

The previous prime is 22201043. The next prime is 22201057. The reversal of 22201045 is 54010222.

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 12916836 + 9284209 = 3594^2 + 3047^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201045 - 2¹ = 22201043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201043) 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, 2220100 + ... + 2220109.

It is an arithmetic number, because the mean of its divisors is an integer number (6660315).

Almost surely, 2^22201045 is an apocalyptic number.

It is an amenable number.

22201045 is a deficient number, since it is larger than the sum of its proper divisors (4440215).

22201045 is an equidigital number, since it uses as much as digits as its factorization.

22201045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440214.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22201045 is about 4711.7984889000. The cubic root of 22201045 is about 281.0548855779.

Adding to 22201045 its reverse (54010222), we get a palindrome (76211267).

The spelling of 22201045 in words is "twenty-two million, two hundred one thousand, forty-five".