1134011221 has 4 divisors (see below), whose sum is σ = 1296012832. Its totient is φ = 972009612.

The previous prime is 1134011209. The next prime is 1134011227. The reversal of 1134011221 is 1221104311.

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: 1221104311 = 7 ⋅174443473.

It is not a de Polignac number, because 1134011221 - 2¹³ = 1134003029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1134011195 and 1134011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1134011227) 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, 81000795 + ... + 81000808.

It is an arithmetic number, because the mean of its divisors is an integer number (324003208).

Almost surely, 2^1134011221 is an apocalyptic number.

It is an amenable number.

1134011221 is a deficient number, since it is larger than the sum of its proper divisors (162001611).

1134011221 is an equidigital number, since it uses as much as digits as its factorization.

1134011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162001610.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1134011221 is about 33675.0830882420. The cubic root of 1134011221 is about 1042.8114330044.

Adding to 1134011221 its reverse (1221104311), we get a palindrome (2355115532).

The spelling of 1134011221 in words is "one billion, one hundred thirty-four million, eleven thousand, two hundred twenty-one".