1220355133 has 2 divisors, whose sum is σ = 1220355134. Its totient is φ = 1220355132.

The previous prime is 1220355131. The next prime is 1220355151. The reversal of 1220355133 is 3315530221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1173610564 + 46744569 = 34258^2 + 6837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220355133 - 2¹ = 1220355131 is a prime.

Together with 1220355131, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1220355098 and 1220355107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220355131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610177566 + 610177567.

It is an arithmetic number, because the mean of its divisors is an integer number (610177567).

Almost surely, 2^1220355133 is an apocalyptic number.

It is an amenable number.

1220355133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220355133 is an equidigital number, since it uses as much as digits as its factorization.

1220355133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1220355133 is about 34933.5817373484. The cubic root of 1220355133 is about 1068.6334004643.

Adding to 1220355133 its reverse (3315530221), we get a palindrome (4535885354).

The spelling of 1220355133 in words is "one billion, two hundred twenty million, three hundred fifty-five thousand, one hundred thirty-three".