1002123132500 has 90 divisors (see below), whose sum is σ = 2549229768162. Its totient is φ = 343585032000.

The previous prime is 1002123132467. The next prime is 1002123132559. The reversal of 1002123132500 is 52313212001.

It can be written as a sum of positive squares in 5 ways, for example, as 274288923076 + 727834209424 = 523726^2 + 853132^2 .

It is a super-2 number, since 2×1002123132500² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3967799 + ... + 4212798.

Almost surely, 2^{1002123132500} is an apocalyptic number.

1002123132500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002123132500 is an abundant number, since it is smaller than the sum of its proper divisors (1547106635662).

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

1002123132500 is an equidigital number, since it uses as much as digits as its factorization.

1002123132500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180635 (or 8180611 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 1002123132500 its reverse (52313212001), we get a palindrome (1054436344501).

The spelling of 1002123132500 in words is "one trillion, two billion, one hundred twenty-three million, one hundred thirty-two thousand, five hundred".