1002011121021 has 8 divisors (see below), whose sum is σ = 1337300698240. Its totient is φ = 667364478912.

The previous prime is 1002011121017. The next prime is 1002011121043. The reversal of 1002011121021 is 1201211102001.

1002011121021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1002011121021 - 2² = 1002011121017 is a prime.

It is a super-2 number, since 2×1002011121021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002011120988 and 1002011121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002011123021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160730140 + ... + 160736373.

It is an arithmetic number, because the mean of its divisors is an integer number (167162587280).

Almost surely, 2^{1002011121021} is an apocalyptic number.

It is an amenable number.

1002011121021 is a deficient number, since it is larger than the sum of its proper divisors (335289577219).

1002011121021 is a wasteful number, since it uses less digits than its factorization.

1002011121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321467555.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1002011121021 its reverse (1201211102001), we get a palindrome (2203222223022).

The spelling of 1002011121021 in words is "one trillion, two billion, eleven million, one hundred twenty-one thousand, twenty-one".