1345221235 has 4 divisors (see below), whose sum is σ = 1614265488. Its totient is φ = 1076176984.

The previous prime is 1345221209. The next prime is 1345221257. The reversal of 1345221235 is 5321225431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5321225431 = 503 ⋅10578977.

It is a cyclic number.

It is not a de Polignac number, because 1345221235 - 2²⁵ = 1311666803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134522119 + ... + 134522128.

It is an arithmetic number, because the mean of its divisors is an integer number (403566372).

Almost surely, 2^1345221235 is an apocalyptic number.

1345221235 is a deficient number, since it is larger than the sum of its proper divisors (269044253).

1345221235 is an equidigital number, since it uses as much as digits as its factorization.

1345221235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269044252.

The product of its digits is 7200, while the sum is 28.

The square root of 1345221235 is about 36677.2577355505. The cubic root of 1345221235 is about 1103.9038247955.

Adding to 1345221235 its reverse (5321225431), we get a palindrome (6666446666).

The spelling of 1345221235 in words is "one billion, three hundred forty-five million, two hundred twenty-one thousand, two hundred thirty-five".