1000201231021 has 8 divisors (see below), whose sum is σ = 1001100297600. Its totient is φ = 999302299632.

The previous prime is 1000201230991. The next prime is 1000201231049. The reversal of 1000201231021 is 1201321020001.

1000201231021 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 a cyclic number.

It is not a de Polignac number, because 1000201231021 - 2¹¹ = 1000201228973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000201230992 and 1000201231010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000201231621) 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, 19969816 + ... + 20019838.

It is an arithmetic number, because the mean of its divisors is an integer number (125137537200).

Almost surely, 2^{1000201231021} is an apocalyptic number.

It is an amenable number.

1000201231021 is a deficient number, since it is larger than the sum of its proper divisors (899066579).

1000201231021 is a wasteful number, since it uses less digits than its factorization.

1000201231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67595.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1000201231021 its reverse (1201321020001), we get a palindrome (2201522251022).

The spelling of 1000201231021 in words is "one trillion, two hundred one million, two hundred thirty-one thousand, twenty-one".