1145351222 has 4 divisors (see below), whose sum is σ = 1718026836. Its totient is φ = 572675610.

The previous prime is 1145351153. The next prime is 1145351227. The reversal of 1145351222 is 2221535411.

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

It is a junction number, because it is equal to n+sod(n) for n = 1145351191 and 1145351200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145351227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286337804 + ... + 286337807.

It is an arithmetic number, because the mean of its divisors is an integer number (429506709).

Almost surely, 2^1145351222 is an apocalyptic number.

1145351222 is a deficient number, since it is larger than the sum of its proper divisors (572675614).

1145351222 is an equidigital number, since it uses as much as digits as its factorization.

1145351222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572675613.

The product of its digits is 2400, while the sum is 26.

The square root of 1145351222 is about 33843.0380137481. The cubic root of 1145351222 is about 1046.2759144024.

Adding to 1145351222 its reverse (2221535411), we get a palindrome (3366886633).

The spelling of 1145351222 in words is "one billion, one hundred forty-five million, three hundred fifty-one thousand, two hundred twenty-two".