1221141133 has 8 divisors (see below), whose sum is σ = 1257505568. Its totient is φ = 1185138864.

The previous prime is 1221141121. The next prime is 1221141137. The reversal of 1221141133 is 3311411221.

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 1221141133 - 2⁵ = 1221141101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1221141133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221141137) 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, 83691 + ... + 97192.

It is an arithmetic number, because the mean of its divisors is an integer number (157188196).

Almost surely, 2^1221141133 is an apocalyptic number.

It is an amenable number.

1221141133 is a deficient number, since it is larger than the sum of its proper divisors (36364435).

1221141133 is a wasteful number, since it uses less digits than its factorization.

1221141133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181083.

The product of its digits is 144, while the sum is 19.

The square root of 1221141133 is about 34944.8298464880. The cubic root of 1221141133 is about 1068.8627778439.

Adding to 1221141133 its reverse (3311411221), we get a palindrome (4532552354).

The spelling of 1221141133 in words is "one billion, two hundred twenty-one million, one hundred forty-one thousand, one hundred thirty-three".