1221301133 has 8 divisors (see below), whose sum is σ = 1384471200. Its totient is φ = 1068020208.

The previous prime is 1221301129. The next prime is 1221301163. The reversal of 1221301133 is 3311031221.

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 1221301133 - 2² = 1221301129 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 (1221301163) 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, 2472023 + ... + 2472516.

It is an arithmetic number, because the mean of its divisors is an integer number (173058900).

Almost surely, 2^1221301133 is an apocalyptic number.

1221301133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1221301133 is a deficient number, since it is larger than the sum of its proper divisors (163170067).

1221301133 is a wasteful number, since it uses less digits than its factorization.

1221301133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4944571.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1221301133 is about 34947.1190944261. The cubic root of 1221301133 is about 1068.9094583821.

Adding to 1221301133 its reverse (3311031221), we get a palindrome (4532332354).

The spelling of 1221301133 in words is "one billion, two hundred twenty-one million, three hundred one thousand, one hundred thirty-three".