22107021 has 8 divisors (see below), whose sum is σ = 31209984. Its totient is φ = 13871040.

The previous prime is 22107011. The next prime is 22107047. The reversal of 22107021 is 12070122.

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

It is not a de Polignac number, because 22107021 - 2⁶ = 22106957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22107011) 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, 216685 + ... + 216786.

It is an arithmetic number, because the mean of its divisors is an integer number (3901248).

Almost surely, 2^22107021 is an apocalyptic number.

It is an amenable number.

22107021 is a deficient number, since it is larger than the sum of its proper divisors (9102963).

22107021 is a wasteful number, since it uses less digits than its factorization.

22107021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433491.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 22107021 is about 4701.8103960071. The cubic root of 22107021 is about 280.6575574616.

Adding to 22107021 its reverse (12070122), we get a palindrome (34177143).

The spelling of 22107021 in words is "twenty-two million, one hundred seven thousand, twenty-one".