1222237133 has 4 divisors (see below), whose sum is σ = 1316255388. Its totient is φ = 1128218880.

The previous prime is 1222237109. The next prime is 1222237141. The reversal of 1222237133 is 3317322221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 762477769 + 459759364 = 27613^2 + 21442^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222237133 - 2⁶ = 1222237069 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 (1222237193) 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, 47009108 + ... + 47009133.

It is an arithmetic number, because the mean of its divisors is an integer number (329063847).

Almost surely, 2^1222237133 is an apocalyptic number.

1222237133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1222237133 is a deficient number, since it is larger than the sum of its proper divisors (94018255).

1222237133 is an equidigital number, since it uses as much as digits as its factorization.

1222237133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94018254.

The product of its digits is 3024, while the sum is 26.

The square root of 1222237133 is about 34960.5081913865. The cubic root of 1222237133 is about 1069.1824578747.

Adding to 1222237133 its reverse (3317322221), we get a palindrome (4539559354).

The spelling of 1222237133 in words is "one billion, two hundred twenty-two million, two hundred thirty-seven thousand, one hundred thirty-three".