22130001 has 12 divisors (see below), whose sum is σ = 32997120. Its totient is φ = 14277240.

The previous prime is 22129999. The next prime is 22130029. The reversal of 22130001 is 10003122.

It is a happy number.

It is not a de Polignac number, because 22130001 - 2¹ = 22129999 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 (22130081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39381 + ... + 39938.

It is an arithmetic number, because the mean of its divisors is an integer number (2749760).

Almost surely, 2^22130001 is an apocalyptic number.

It is an amenable number.

22130001 is a deficient number, since it is larger than the sum of its proper divisors (10867119).

22130001 is a wasteful number, since it uses less digits than its factorization.

22130001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79356 (or 79353 counting only the distinct ones).

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

The square root of 22130001 is about 4704.2535008224. The cubic root of 22130001 is about 280.7547705781.

Adding to 22130001 its reverse (10003122), we get a palindrome (32133123).

The spelling of 22130001 in words is "twenty-two million, one hundred thirty thousand, one".