1221134033 has 8 divisors (see below), whose sum is σ = 1419236160. Its totient is φ = 1028945520.

The previous prime is 1221134029. The next prime is 1221134039. The reversal of 1221134033 is 3304311221.

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 1221134033 - 2² = 1221134029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221133996 and 1221134014.

It is not an unprimeable number, because it can be changed into a prime (1221134039) 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, 1477958 + ... + 1478783.

It is an arithmetic number, because the mean of its divisors is an integer number (177404520).

Almost surely, 2^1221134033 is an apocalyptic number.

It is an amenable number.

1221134033 is a deficient number, since it is larger than the sum of its proper divisors (198102127).

1221134033 is an equidigital number, since it uses as much as digits as its factorization.

1221134033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956807.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1221134033 is about 34944.7282576357. The cubic root of 1221134033 is about 1068.8607063005.

Adding to 1221134033 its reverse (3304311221), we get a palindrome (4525445254).

The spelling of 1221134033 in words is "one billion, two hundred twenty-one million, one hundred thirty-four thousand, thirty-three".