1123203021144 has 64 divisors (see below), whose sum is σ = 2812011552000. Its totient is φ = 373867536000.

The previous prime is 1123203021107. The next prime is 1123203021163. The reversal of 1123203021144 is 4411203023211.

It is a super-2 number, since 2×1123203021144² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51628269 + ... + 51650019.

It is an arithmetic number, because the mean of its divisors is an integer number (43937680500).

Almost surely, 2^{1123203021144} is an apocalyptic number.

It is an amenable number.

1123203021144 is an abundant number, since it is smaller than the sum of its proper divisors (1688808530856).

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

1123203021144 is a wasteful number, since it uses less digits than its factorization.

1123203021144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24728 (or 24724 counting only the distinct ones).

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

Adding to 1123203021144 its reverse (4411203023211), we get a palindrome (5534406044355).

The spelling of 1123203021144 in words is "one trillion, one hundred twenty-three billion, two hundred three million, twenty-one thousand, one hundred forty-four".