1222321229 has 4 divisors (see below), whose sum is σ = 1222687200. Its totient is φ = 1221955260.

The previous prime is 1222321213. The next prime is 1222321297. The reversal of 1222321229 is 9221232221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9221232221 = 24877 ⋅370673.

It is a cyclic number.

It is not a de Polignac number, because 1222321229 - 2⁴ = 1222321213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222321198 and 1222321207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222323229) 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, 177929 + ... + 184670.

It is an arithmetic number, because the mean of its divisors is an integer number (305671800).

Almost surely, 2^1222321229 is an apocalyptic number.

It is an amenable number.

1222321229 is a deficient number, since it is larger than the sum of its proper divisors (365971).

1222321229 is an equidigital number, since it uses as much as digits as its factorization.

1222321229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365970.

The product of its digits is 1728, while the sum is 26.

The square root of 1222321229 is about 34961.7108992109. The cubic root of 1222321229 is about 1069.2069790044.

The spelling of 1222321229 in words is "one billion, two hundred twenty-two million, three hundred twenty-one thousand, two hundred twenty-nine".