22132001 has 4 divisors (see below), whose sum is σ = 22237104. Its totient is φ = 22026900.

The previous prime is 22131983. The next prime is 22132027. The reversal of 22132001 is 10023122.

It is a happy number.

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: 10023122 = 2 ⋅5011561.

It is a cyclic number.

It is not a de Polignac number, because 22132001 - 2²² = 17937697 is a prime.

It is a super-3 number, since 3×22132001³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22132051) 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 3 ways as a sum of consecutive naturals, for example, 52235 + ... + 52656.

It is an arithmetic number, because the mean of its divisors is an integer number (5559276).

Almost surely, 2^22132001 is an apocalyptic number.

It is an amenable number.

22132001 is a deficient number, since it is larger than the sum of its proper divisors (105103).

22132001 is a wasteful number, since it uses less digits than its factorization.

22132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105102.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 22132001 is about 4704.4660695981. The cubic root of 22132001 is about 280.7632280657.

Adding to 22132001 its reverse (10023122), we get a palindrome (32155123).

The spelling of 22132001 in words is "twenty-two million, one hundred thirty-two thousand, one".