22091001 has 8 divisors (see below), whose sum is σ = 29518080. Its totient is φ = 14695632.

The previous prime is 22090993. The next prime is 22091021. The reversal of 22091001 is 10019022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22091001 - 2³ = 22090993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22091021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6250 + ... + 9123.

It is an arithmetic number, because the mean of its divisors is an integer number (3689760).

Almost surely, 2^22091001 is an apocalyptic number.

It is an amenable number.

22091001 is a deficient number, since it is larger than the sum of its proper divisors (7427079).

22091001 is a wasteful number, since it uses less digits than its factorization.

22091001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15855.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 22091001 is about 4700.1064881553. The cubic root of 22091001 is about 280.5897476232.

The spelling of 22091001 in words is "twenty-two million, ninety-one thousand, one".