1125231321204 has 144 divisors (see below), whose sum is σ = 3027181248000. Its totient is φ = 351413944128.

The previous prime is 1125231321199. The next prime is 1125231321251. The reversal of 1125231321204 is 4021231325211.

It is a happy number.

1125231321204 is a `hidden beast` number, since 1 + 1 + 2 + 523 + 13 + 2 + 120 + 4 = 666.

It is a super-2 number, since 2×1125231321204² (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 47 ways as a sum of consecutive naturals, for example, 43826779 + ... + 43852445.

It is an arithmetic number, because the mean of its divisors is an integer number (21022092000).

Almost surely, 2^{1125231321204} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125231321204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513590624000).

1125231321204 is an abundant number, since it is smaller than the sum of its proper divisors (1901949926796).

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

1125231321204 is a wasteful number, since it uses less digits than its factorization.

1125231321204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26402 (or 26397 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 1125231321204 its reverse (4021231325211), we get a palindrome (5146462646415).

The spelling of 1125231321204 in words is "one trillion, one hundred twenty-five billion, two hundred thirty-one million, three hundred twenty-one thousand, two hundred four".