1221410133 has 6 divisors (see below), whose sum is σ = 1764259094. Its totient is φ = 814273416.

The previous prime is 1221410093. The next prime is 1221410149. The reversal of 1221410133 is 3310141221.

1221410133 is a `hidden beast` number, since 1 + 221 + 410 + 1 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 831860964 + 389549169 = 28842^2 + 19737^2 .

It is not a de Polignac number, because 1221410133 - 2⁸ = 1221409877 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 (1221410173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67856110 + ... + 67856127.

Almost surely, 2^1221410133 is an apocalyptic number.

It is an amenable number.

1221410133 is a deficient number, since it is larger than the sum of its proper divisors (542848961).

1221410133 is a wasteful number, since it uses less digits than its factorization.

1221410133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135712243 (or 135712240 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1221410133 is about 34948.6785587095. The cubic root of 1221410133 is about 1068.9412571639.

Adding to 1221410133 its reverse (3310141221), we get a palindrome (4531551354).

The spelling of 1221410133 in words is "one billion, two hundred twenty-one million, four hundred ten thousand, one hundred thirty-three".