1001120002121 has 4 divisors (see below), whose sum is σ = 1003349668500. Its totient is φ = 998890335744.

The previous prime is 1001120002109. The next prime is 1001120002123. The reversal of 1001120002121 is 1212000211001.

1001120002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 517232817721 + 483887184400 = 719189^2 + 695620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001120002121 - 2¹⁴ = 1001119985737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001120002123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114832516 + ... + 1114833413.

It is an arithmetic number, because the mean of its divisors is an integer number (250837417125).

Almost surely, 2^{1001120002121} is an apocalyptic number.

It is an amenable number.

1001120002121 is a deficient number, since it is larger than the sum of its proper divisors (2229666379).

1001120002121 is an equidigital number, since it uses as much as digits as its factorization.

1001120002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229666378.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001120002121 its reverse (1212000211001), we get a palindrome (2213120213122).

The spelling of 1001120002121 in words is "one trillion, one billion, one hundred twenty million, two thousand, one hundred twenty-one".