1123203505452 has 24 divisors (see below), whose sum is σ = 2995209348096. Its totient is φ = 320915287248.

The previous prime is 1123203505447. The next prime is 1123203505471. The reversal of 1123203505452 is 2545053023211.

It is a super-2 number, since 2×1123203505452² (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, 6685735068 + ... + 6685735235.

It is an arithmetic number, because the mean of its divisors is an integer number (124800389504).

Almost surely, 2^{1123203505452} is an apocalyptic number.

1123203505452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123203505452 is an abundant number, since it is smaller than the sum of its proper divisors (1872005842644).

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

1123203505452 is a wasteful number, since it uses less digits than its factorization.

1123203505452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13371470317 (or 13371470315 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 1123203505452 its reverse (2545053023211), we get a palindrome (3668256528663).

The spelling of 1123203505452 in words is "one trillion, one hundred twenty-three billion, two hundred three million, five hundred five thousand, four hundred fifty-two".