1001120000121 has 16 divisors (see below), whose sum is σ = 1547625121920. Its totient is φ = 638395362000.

The previous prime is 1001120000087. The next prime is 1001120000123. The reversal of 1001120000121 is 1210000211001.

It is a happy number.

It is not a de Polignac number, because 1001120000121 - 2⁷ = 1001119999993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1001120000123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 806054130 + ... + 806055371.

It is an arithmetic number, because the mean of its divisors is an integer number (96726570120).

Almost surely, 2^{1001120000121} is an apocalyptic number.

It is an amenable number.

1001120000121 is a deficient number, since it is larger than the sum of its proper divisors (546505121799).

1001120000121 is a wasteful number, since it uses less digits than its factorization.

1001120000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612109533 (or 1612109527 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1001120000121 its reverse (1210000211001), we get a palindrome (2211120211122).

The spelling of 1001120000121 in words is "one trillion, one billion, one hundred twenty million, one hundred twenty-one", and thus it is an aban number.