8822899778221 has 4 divisors (see below), whose sum is σ = 8826188226592. Its totient is φ = 8819611329852.

The previous prime is 8822899778201. The next prime is 8822899778227. The reversal of 8822899778221 is 1228779982288.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8822899778221 - 2²⁵ = 8822866223789 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 (8822899778227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644220161 + ... + 1644225526.

It is an arithmetic number, because the mean of its divisors is an integer number (2206547056648).

Almost surely, 2^{8822899778221} is an apocalyptic number.

It is an amenable number.

8822899778221 is a deficient number, since it is larger than the sum of its proper divisors (3288448371).

8822899778221 is a wasteful number, since it uses less digits than its factorization.

8822899778221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288448370.

The product of its digits is 260112384, while the sum is 73.

The spelling of 8822899778221 in words is "eight trillion, eight hundred twenty-two billion, eight hundred ninety-nine million, seven hundred seventy-eight thousand, two hundred twenty-one".