1229453221 has 8 divisors (see below), whose sum is σ = 1256042880. Its totient is φ = 1203139392.

The previous prime is 1229453153. The next prime is 1229453227. The reversal of 1229453221 is 1223549221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1229453221 - 2¹³ = 1229445029 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 (1229453227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59935 + ... + 77788.

It is an arithmetic number, because the mean of its divisors is an integer number (157005360).

Almost surely, 2^1229453221 is an apocalyptic number.

It is an amenable number.

1229453221 is a deficient number, since it is larger than the sum of its proper divisors (26589659).

1229453221 is a wasteful number, since it uses less digits than its factorization.

1229453221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137915.

The product of its digits is 8640, while the sum is 31.

The square root of 1229453221 is about 35063.5597308659. The cubic root of 1229453221 is about 1071.2824815020.

The spelling of 1229453221 in words is "one billion, two hundred twenty-nine million, four hundred fifty-three thousand, two hundred twenty-one".