1001121021330 has 32 divisors (see below), whose sum is σ = 2529147844800. Its totient is φ = 252914784192.

The previous prime is 1001121021323. The next prime is 1001121021359. The reversal of 1001121021330 is 331201211001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 878175765 + ... + 878176904.

It is an arithmetic number, because the mean of its divisors is an integer number (79035870150).

Almost surely, 2^{1001121021330} is an apocalyptic number.

1001121021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001121021330 is an abundant number, since it is smaller than the sum of its proper divisors (1528026823470).

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

1001121021330 is a wasteful number, since it uses less digits than its factorization.

1001121021330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756352698.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1001121021330 its reverse (331201211001), we get a palindrome (1332322232331).

The spelling of 1001121021330 in words is "one trillion, one billion, one hundred twenty-one million, twenty-one thousand, three hundred thirty".