1123123213000 has 32 divisors (see below), whose sum is σ = 2628108320760. Its totient is φ = 449249284800.

The previous prime is 1123123212983. The next prime is 1123123213033. The reversal of 1123123213000 is 3123213211.

It can be written as a sum of positive squares in 4 ways, for example, as 529369746084 + 593753466916 = 727578^2 + 770554^2 .

It is a super-2 number, since 2×1123123213000² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561560607 + ... + 561562606.

Almost surely, 2^{1123123213000} is an apocalyptic number.

1123123213000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123123213000 is an abundant number, since it is smaller than the sum of its proper divisors (1504985107760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123123213000 is a wasteful number, since it uses less digits than its factorization.

1123123213000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123123234 (or 1123123220 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1123123213000 its reverse (3123213211), we get a palindrome (1126246426211).

The spelling of 1123123213000 in words is "one trillion, one hundred twenty-three billion, one hundred twenty-three million, two hundred thirteen thousand".