1002011201021 has 8 divisors (see below), whose sum is σ = 1004203920000. Its totient is φ = 999819221760.

The previous prime is 1002011200987. The next prime is 1002011201111. The reversal of 1002011201021 is 1201021102001.

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

It is a cyclic number.

It is not a de Polignac number, because 1002011201021 - 2³⁴ = 984831331837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002011200993 and 1002011201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002011231021) 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, 2572061 + ... + 2935901.

It is an arithmetic number, because the mean of its divisors is an integer number (125525490000).

Almost surely, 2^{1002011201021} is an apocalyptic number.

It is an amenable number.

1002011201021 is a deficient number, since it is larger than the sum of its proper divisors (2192718979).

1002011201021 is an equidigital number, since it uses as much as digits as its factorization.

1002011201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369859.

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

Adding to 1002011201021 its reverse (1201021102001), we get a palindrome (2203032303022).

The spelling of 1002011201021 in words is "one trillion, two billion, eleven million, two hundred one thousand, twenty-one".