1051121310500 has 96 divisors (see below), whose sum is σ = 2348592599808. Its totient is φ = 410856768000.

The previous prime is 1051121310497. The next prime is 1051121310509. The reversal of 1051121310500 is 50131211501.

It is a happy number.

It is a super-2 number, since 2×1051121310500² (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 not an unprimeable number, because it can be changed into a prime (1051121310509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3880487 + ... + 4142513.

It is an arithmetic number, because the mean of its divisors is an integer number (24464506248).

Almost surely, 2^{1051121310500} is an apocalyptic number.

1051121310500 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 1051121310500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1174296299904).

1051121310500 is an abundant number, since it is smaller than the sum of its proper divisors (1297471289308).

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

1051121310500 is a wasteful number, since it uses less digits than its factorization.

1051121310500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262230 (or 262218 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

1051121310500 divided by its sum of digits (20) gives a palindrome (52556065525).

The spelling of 1051121310500 in words is "one trillion, fifty-one billion, one hundred twenty-one million, three hundred ten thousand, five hundred".