9022002212221 has 4 divisors (see below), whose sum is σ = 9022351373244. Its totient is φ = 9021653051200.

The previous prime is 9022002212213. The next prime is 9022002212239. The reversal of 9022002212221 is 1222122002209.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1592616236121 + 7429385976100 = 1261989^2 + 2725690^2 .

It is a cyclic number.

It is not a de Polignac number, because 9022002212221 - 2³ = 9022002212213 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 (9022002212261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174541750 + ... + 174593431.

It is an arithmetic number, because the mean of its divisors is an integer number (2255587843311).

Almost surely, 2^{9022002212221} is an apocalyptic number.

It is an amenable number.

9022002212221 is a deficient number, since it is larger than the sum of its proper divisors (349161023).

9022002212221 is a wasteful number, since it uses less digits than its factorization.

9022002212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349161022.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 9022002212221 in words is "nine trillion, twenty-two billion, two million, two hundred twelve thousand, two hundred twenty-one".