22221210998 has 24 divisors (see below), whose sum is σ = 40024517184. Its totient is φ = 9216169200.

The previous prime is 22221210997. The next prime is 22221211063. The reversal of 22221210998 is 89901212222.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221210997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3654173 + ... + 3660248.

It is an arithmetic number, because the mean of its divisors is an integer number (1667688216).

Almost surely, 2^22221210998 is an apocalyptic number.

22221210998 is a deficient number, since it is larger than the sum of its proper divisors (17803306186).

22221210998 is a wasteful number, since it uses less digits than its factorization.

22221210998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7314468 (or 7314461 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 22221210998 in words is "twenty-two billion, two hundred twenty-one million, two hundred ten thousand, nine hundred ninety-eight".