22001045 has 16 divisors (see below), whose sum is σ = 28911168. Its totient is φ = 15939840.

The previous prime is 22001033. The next prime is 22001047. The reversal of 22001045 is 54010022.

It is not a de Polignac number, because 22001045 - 2¹⁰ = 22000021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17942 + ... + 19128.

It is an arithmetic number, because the mean of its divisors is an integer number (1806948).

Almost surely, 2^22001045 is an apocalyptic number.

It is an amenable number.

22001045 is a deficient number, since it is larger than the sum of its proper divisors (6910123).

22001045 is a wasteful number, since it uses less digits than its factorization.

22001045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 22001045 is about 4690.5271558749. The cubic root of 22001045 is about 280.2083695576.

Adding to 22001045 its reverse (54010022), we get a palindrome (76011067).

The spelling of 22001045 in words is "twenty-two million, one thousand, forty-five".