22021449249 has 8 divisors (see below), whose sum is σ = 29800170400. Its totient is φ = 14461847136.

The previous prime is 22021449227. The next prime is 22021449253. The reversal of 22021449249 is 94294412022.

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

It is not a de Polignac number, because 22021449249 - 2⁹ = 22021448737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021449269) 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, 54779524 + ... + 54779925.

It is an arithmetic number, because the mean of its divisors is an integer number (3725021300).

Almost surely, 2^22021449249 is an apocalyptic number.

It is an amenable number.

22021449249 is a deficient number, since it is larger than the sum of its proper divisors (7778721151).

22021449249 is a wasteful number, since it uses less digits than its factorization.

22021449249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109559519.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 22021449249 in words is "twenty-two billion, twenty-one million, four hundred forty-nine thousand, two hundred forty-nine".