1123213001 has 8 divisors (see below), whose sum is σ = 1190993544. Its totient is φ = 1055622400.

The previous prime is 1123212977. The next prime is 1123213009. The reversal of 1123213001 is 1003123211.

It can be written as a sum of positive squares in 4 ways, for example, as 918150601 + 205062400 = 30301^2 + 14320^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123213001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123213009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35210 + ... + 59043.

It is an arithmetic number, because the mean of its divisors is an integer number (148874193).

Almost surely, 2^1123213001 is an apocalyptic number.

It is an amenable number.

1123213001 is a deficient number, since it is larger than the sum of its proper divisors (67780543).

1123213001 is an equidigital number, since it uses as much as digits as its factorization.

1123213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94971.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1123213001 is about 33514.3700671816. The cubic root of 1123213001 is about 1039.4909370683.

Adding to 1123213001 its reverse (1003123211), we get a palindrome (2126336212).

The spelling of 1123213001 in words is "one billion, one hundred twenty-three million, two hundred thirteen thousand, one".