9221221229 has 4 divisors (see below), whose sum is σ = 10059514080. Its totient is φ = 8382928380.

The previous prime is 9221221223. The next prime is 9221221231.

It is a happy number.

9221221229 is nontrivially palindromic in base 10.

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 9221221229 - 2⁴ = 9221221213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9221221195 and 9221221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9221221223) 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, 419146409 + ... + 419146430.

It is an arithmetic number, because the mean of its divisors is an integer number (2514878520).

Almost surely, 2^9221221229 is an apocalyptic number.

It is an amenable number.

9221221229 is a deficient number, since it is larger than the sum of its proper divisors (838292851).

9221221229 is a wasteful number, since it uses less digits than its factorization.

9221221229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838292850.

The product of its digits is 5184, while the sum is 32.

The square root of 9221221229 is about 96027.1900505268. The cubic root of 9221221229 is about 2096.9889749650.

The spelling of 9221221229 in words is "nine billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-nine".