22101003 has 12 divisors (see below), whose sum is σ = 33801768. Its totient is φ = 13867200.

The previous prime is 22100959. The next prime is 22101029. The reversal of 22101003 is 30010122.

It is a happy number.

It is not a de Polignac number, because 22101003 - 2¹⁴ = 22084619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (22101043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72073 + ... + 72378.

It is an arithmetic number, because the mean of its divisors is an integer number (2816814).

Almost surely, 2^22101003 is an apocalyptic number.

22101003 is a deficient number, since it is larger than the sum of its proper divisors (11700765).

22101003 is a wasteful number, since it uses less digits than its factorization.

22101003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144474 (or 144471 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 22101003 is about 4701.1703861911. The cubic root of 22101003 is about 280.6320881704.

Adding to 22101003 its reverse (30010122), we get a palindrome (52111125).

It can be divided in two parts, 22 and 101003, that added together give a triangular number (101025 = T₄₄₉).

The spelling of 22101003 in words is "twenty-two million, one hundred one thousand, three".