22247419921 has 16 divisors (see below), whose sum is σ = 23631598080. Its totient is φ = 20900436480.

The previous prime is 22247419897. The next prime is 22247419963. The reversal of 22247419921 is 12991474222.

It is a cyclic number.

It is not a de Polignac number, because 22247419921 - 2¹³ = 22247411729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22247419981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373561 + ... + 429001.

It is an arithmetic number, because the mean of its divisors is an integer number (1476974880).

Almost surely, 2^22247419921 is an apocalyptic number.

It is an amenable number.

22247419921 is a deficient number, since it is larger than the sum of its proper divisors (1384178159).

22247419921 is a wasteful number, since it uses less digits than its factorization.

22247419921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55776.

The product of its digits is 145152, while the sum is 43.

The spelling of 22247419921 in words is "twenty-two billion, two hundred forty-seven million, four hundred nineteen thousand, nine hundred twenty-one".