1154134221 has 8 divisors (see below), whose sum is σ = 1542401280. Its totient is φ = 767644992.

The previous prime is 1154134193. The next prime is 1154134249. The reversal of 1154134221 is 1224314511.

It is an interprime number because it is at equal distance from previous prime (1154134193) and next prime (1154134249).

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

It is not a de Polignac number, because 1154134221 - 2¹⁴ = 1154117837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1154134191 and 1154134200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154138221) 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, 442941 + ... + 445538.

It is an arithmetic number, because the mean of its divisors is an integer number (192800160).

Almost surely, 2^1154134221 is an apocalyptic number.

It is an amenable number.

1154134221 is a deficient number, since it is larger than the sum of its proper divisors (388267059).

1154134221 is an equidigital number, since it uses as much as digits as its factorization.

1154134221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888915.

The product of its digits is 960, while the sum is 24.

The square root of 1154134221 is about 33972.5509934123. The cubic root of 1154134221 is about 1048.9435242131.

Adding to 1154134221 its reverse (1224314511), we get a palindrome (2378448732).

The spelling of 1154134221 in words is "one billion, one hundred fifty-four million, one hundred thirty-four thousand, two hundred twenty-one".