1123122123420 has 288 divisors, whose sum is σ = 3673661947200. Its totient is φ = 255295856640.

The previous prime is 1123122123379. The next prime is 1123122123451. The reversal of 1123122123420 is 243212213211.

It is a super-2 number, since 2×1123122123420² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33183066 + ... + 33216894.

It is an arithmetic number, because the mean of its divisors is an integer number (12755770650).

Almost surely, 2^{1123122123420} is an apocalyptic number.

1123122123420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123122123420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836830973600).

1123122123420 is an abundant number, since it is smaller than the sum of its proper divisors (2550539823780).

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

1123122123420 is a wasteful number, since it uses less digits than its factorization.

1123122123420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34149 (or 34136 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1123122123420 its reverse (243212213211), we get a palindrome (1366334336631).

The spelling of 1123122123420 in words is "one trillion, one hundred twenty-three billion, one hundred twenty-two million, one hundred twenty-three thousand, four hundred twenty".