1145122203 has 4 divisors (see below), whose sum is σ = 1526829608. Its totient is φ = 763414800.

The previous prime is 1145122201. The next prime is 1145122211. The reversal of 1145122203 is 3022215411.

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

It is not a de Polignac number, because 1145122203 - 2¹ = 1145122201 is a prime.

It is a super-2 number, since 2×1145122203² = 2622609719607146418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145122203.

It is not an unprimeable number, because it can be changed into a prime (1145122201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190853698 + ... + 190853703.

It is an arithmetic number, because the mean of its divisors is an integer number (381707402).

Almost surely, 2^1145122203 is an apocalyptic number.

1145122203 is a deficient number, since it is larger than the sum of its proper divisors (381707405).

1145122203 is an equidigital number, since it uses as much as digits as its factorization.

1145122203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381707404.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1145122203 is about 33839.6542978796. The cubic root of 1145122203 is about 1046.2061736301.

Adding to 1145122203 its reverse (3022215411), we get a palindrome (4167337614).

The spelling of 1145122203 in words is "one billion, one hundred forty-five million, one hundred twenty-two thousand, two hundred three".