22021892449 has 8 divisors (see below), whose sum is σ = 23247750240. Its totient is φ = 20802715776.

The previous prime is 22021892447. The next prime is 22021892461. The reversal of 22021892449 is 94429812022.

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

It is a cyclic number.

It is not a de Polignac number, because 22021892449 - 2¹ = 22021892447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021892447) 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, 1663504 + ... + 1676689.

It is an arithmetic number, because the mean of its divisors is an integer number (2905968780).

Almost surely, 2^22021892449 is an apocalyptic number.

It is an amenable number.

22021892449 is a deficient number, since it is larger than the sum of its proper divisors (1225857791).

22021892449 is a wasteful number, since it uses less digits than its factorization.

22021892449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340559.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 22021892449 in words is "twenty-two billion, twenty-one million, eight hundred ninety-two thousand, four hundred forty-nine".