22021699 has 8 divisors (see below), whose sum is σ = 25274880. Its totient is φ = 18795336.

The previous prime is 22021693. The next prime is 22021711. The reversal of 22021699 is 99612022.

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

It is not a de Polignac number, because 22021699 - 2⁵ = 22021667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22021699.

It is not an unprimeable number, because it can be changed into a prime (22021693) 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, 4909 + ... + 8254.

It is an arithmetic number, because the mean of its divisors is an integer number (3159360).

Almost surely, 2^22021699 is an apocalyptic number.

22021699 is a deficient number, since it is larger than the sum of its proper divisors (3253181).

22021699 is a wasteful number, since it uses less digits than its factorization.

22021699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13409.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 22021699 is about 4692.7283109083. The cubic root of 22021699 is about 280.2960262057.

The spelling of 22021699 in words is "twenty-two million, twenty-one thousand, six hundred ninety-nine".