22021449247 has 8 divisors (see below), whose sum is σ = 25521841152. Its totient is φ = 18609675000.

The previous prime is 22021449227. The next prime is 22021449253. The reversal of 22021449247 is 74294412022.

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

It is not a de Polignac number, because 22021449247 - 2⁷ = 22021449119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021449227) 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, 22153879 + ... + 22154872.

It is an arithmetic number, because the mean of its divisors is an integer number (3190230144).

Almost surely, 2^22021449247 is an apocalyptic number.

22021449247 is a deficient number, since it is larger than the sum of its proper divisors (3500391905).

22021449247 is an equidigital number, since it uses as much as digits as its factorization.

22021449247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44308829.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 22021449247 in words is "twenty-two billion, twenty-one million, four hundred forty-nine thousand, two hundred forty-seven".